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`u.s. unurv-Patent~ 7 2004
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`APPL ~UM
`10169333
`
`FILING DATE CLASS SUBCLASS GAU
`tjt.)(:, S3 3747
`0911612002
`123
`
`EXAMINER
`H J./'1 J;t' H-
`
`Joos Klaus; Daeubel Ralf; Grass Gerd; Weiss Ruediger; Bochurn
`APPLICANTS:
`ansjoerg; Schaut Edmund;
`
`CONTINUING DATA VERIFIED:
`application is a 371 of PCT/DE00/04633 12/27/2000
`
`y x.J) '~\\-~
`
`FGREIGI\~ APPLICATIONS VERIFIED:
`:199639140 12/31/1999
`1-~ -~ Yl-~
`
`NOT PUBLISH D
`PG-PUB
`Foreign priority claimed
`35 USC 119 conditions met
`Verified and Acknowledged Examiners's intia!s
`
`yes Cl no
`~es u no
`1\-· 1-/-
`
`NOncE OF ALLOWANCE MAILIED
`
`PREPARED FOR ISSUE
`WARNING: The iaf'OJIDidion disclollecJ bereiD may be m1ricted.
`Uuauthorizeddisclosuro maybepmhibiled_by, the UDited States Code Title 35,
`Sectioas 122, 181 aad368, ~'outside tbe U.S. Patent & Trademark
`Oft'ice is mtriCted to autborized
`aad contractors onl •
`HSSlJlL.;; ~EE lN FILE.
`0 QISK(CRF)
`D CD-ROM
`' It'.~
`~-In pocket cxulght l,nslde flap)
`E
`
`MAHMOUD GIMIE
`PRIMARY PATENT EXAMINER
`ART~inar
`
`FILEDWtTH:
`
`D TERMINAL
`
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`10169333
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`Ex. 2002 2/176
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`\
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`Ex. 2002 3/176
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`

`
`SEARCH NOTES
`(List databases searched. Attach
`search strategy inside.).
`Date Exmr.
`7f~_rl~~ .tJ-A 1-1--
`/2/9/03 l+ II tl-/·
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`Ex. 2002 4/176
`
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`
`. $ ~~r·
`PATENT APPLICATION SERIAL NO. 1 0 /1"'6 9 3 ~ j
`
`1'/.r.
`
`:•
`
`U.S. DEPARTMENT OF COMMERCE
`PATENT AND TRADEMARK OFFICE
`FEE RECORD SHEET
`
`07/0812002 SNAJARRO 00000023 110600
`01 FC:970
`890.00CH
`
`10169333
`
`PT0-1556
`(5/87)
`
`'U.S. Government Printing Office: 2001- 481-697/59173
`
`Ex. 2002 5/176
`
`

`
`Page 1 of 1
`
`Commtasiooe.r· to.r· Patents.
`W~shtngton.-PC 202'31
`W'\N'W'.uspto_gov
`
`CONFIRMATION NO. 9484
`
`CLASS
`123
`
`GROUP ART UNIT
`3747
`
`ATIORNEY
`DOCKET NO.
`10191/2567
`
`\
`
`UNlTED STATES
`PATE.NTAND
`TRADEMAlUC Ol"FI<;:E
`
`llllllllllllllllllllllllllllllllllllll 11111111111111111111111111111111
`.!lib Data Sheet
`
`SERIAL NUMBER
`1 tJ/169,333.,/
`
`I
`
`~,..~~~
`
`FILING DATE
`09/16/2002
`RULE
`
`APPLICANTS
`Klaus Joos, Walheim, GERMANY;
`Ralf Daeubel, Markgroeningen, GERMANY;
`Gerd Grass, Schwieberdingen, GERMANY;
`Ruediger Weiss, Moetzingen, GERMANY;
`Hansjoerg Bochum, Leinfelden, GERMANY;
`Edmund Schaut, Friolzheim, GERMANY;
`
`/. CONTINUING DATA *****"'********'""**"'****'""
`I
`This application is a 371 of PCT/DE00/04633 12/27/2000
`'i .v, <.Ilk I+'
`\
`•• FOREIGN APPLICATIONS ....................
`GERMANY 199639140 12/31/1999
`\.\- \\- \f/
`"{ )2)1
`
`'
`,I
`!-
`
`jhreign Priority claimed
`
`;35 USC 119 (a -d) conditions
`met
`VerifiEd and
`AcknoNiedged
`
`Examiner's Signature
`
`Initials
`
`~sDno
`yes D no D Met after
`~\\- o/'
`
`Allowance
`
`STATE OR
`COUNTRY
`GERMANY
`
`SHEETS
`DRAWING
`1
`
`TOTAL
`CLAIMS
`8
`
`INDEPENDENT
`CLAIMS
`1
`
`ADD'~ESS
`2664(3
`
`TITLE:
`
`Method for operating an otto-cycle internal combustion engine with fuel injection on a cold start
`
`I
`
`FILING FEE FEES: Authority has been given in Paper
`RECEIVED No.
`to charge/credit DEPOSIT ACCOUNT
`No.
`for following:
`1020
`
`ID All Fees
`ID 1.16 Fees (Filing)
`D 1.17 Fees (Processing Ext. of
`ID 1.18 Fees (Issue)
`ID Other
`ID Credit
`
`time)
`
`I
`I
`
`I
`I
`
`I
`
`Ex. 2002 6/176
`
`

`
`FORM PT0-1390
`(REV. 5-93)
`
`U .. S. De. _ .{TMENT OF COMMERCE
`PATENT AND TRADEMARK OFFICE
`
`ATTORNE~. _JCKET NUMBER
`10191/2567
`
`TRANSMITTAL LETTER TO lHE UNITED STATES
`DESIGNATED/ELECTED OFFICE (DO/EO/US)
`CONCERNING A FILING UNDER 35 U.S.C. 371
`
`U.S. APPLICATION NO. (If known, see 37 CFR 1.5)
`
`10/169333
`
`INTERNATIONAL APPLICATION NO.
`PCT/DE00/04633
`
`INTERNATIONAL FILING DATE
`(27.12.00)
`27 December 2000
`
`PRIORITY DATE(S) CLAIMED
`(31.12.99)
`31 December 1999
`
`TITLE OF INVENTION
`METHOD OF OPERATING A SPARK IGNITION INTERNAL COMBUSTION ENGINE HAVING FUEL INJECTION AT A COLD START
`
`APPLICANT(S) FOR DO/EO/US
`
`JOOS, Klaus; DAEUBEL, Ralf; GRASS, Gerd; WEISS, Ruediger; BOCHUM, Hansjoerg and SCHAUT, Edmund
`
`Applicant(s) herewith submit to the United States Designated/Elected Office (DO/EO/US) the following items and other information
`This is a FIRST submission of items concerning a filing under 35 U.S. C. 371.
`1. I:8J
`2. 0
`3. I:8J
`
`This is a SECOND or SUBSEQUENT submission of items concerning a filing under 35 U.S.C. 371.
`
`This is an express request to begin national examination procedures (35 U.S.C. 371 (f)) immediately rather than delay examination until
`the expiration of the applicable time limit set in 35 U.S.C. 371 (b) and PCT Articles 22 and 39(1 ).
`A proper Demand for International Preliminary Examination was made by the 19th month from the earliest claimed priority date.
`
`4. I:8J
`
`5. I:8J
`A copy of the International Application as filed (35 U.S.C. 371 (c)(2))
`a. 0 is transmitted herewith (required only if not transmitted by the International Bureau).
`b.
`I:8J has been transmitted by the International Bureau.
`c. 0 is not required, as the application was filed in the United States Receiving Office (RO/US)
`
`6. I:8J
`
`A translation of the International Application into English (35 U.S. C. 371 (c)(2)).
`
`7. I:8J
`Amendments to the claims of the International Application under PCT Article 19 (35 U.S.C. 371(c)(3))
`a. 0 are transmitted herewith (required only if not transmitted by the International Bureau).
`b. 0 have been transmitted by the International Bureau.
`c. 0 have not been made; however, the time limit for making such amendments has NOT expired.
`d.I:8J have not been made and will not be made.
`
`8. 0
`9.
`I:8J
`
`10. I:8J
`
`A translation of the amendments to the claims under PCT Article 19 (35 U.S.C. 371(c)(3)).
`
`An oath or declaration of the inventor(s) (35 U.S.C. 371 (c)(4)) (unsigned).
`
`A translation of the annexes to the International Preliminary Examination Report under PCT Article 36 (35 U.S.C. 371(c)(5)).
`
`Items 11. to 16. below concern other document(s) or information included:
`
`I:8J
`11.
`12.0
`
`13. I:8J
`0
`
`14. I:8J
`15.0
`16. I:8J
`
`An Information Disclosure Statement under 37 CFR 1.97 and 1.98.
`
`An assignment document for recording. A separate cover sheet in compliance with 37 CFR 3.28 and 3.31 is included.
`
`A FIRST preliminary amendment.
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`A substitute specification and a marked-up version of the substitute specification.
`
`A change of power of attorney and/or address letter.
`
`Other items or information: International Search Report (translated), International Preliminary Examination Report (translated) and Form
`PCT/R0/1 01.
`
`Express Mail No. EL828246076
`
`NY01 488754 v 1
`
`Ex. 2002 7/176
`
`

`
`-
`I NT•
`
`I
`
`.IONAL APPLICATION NO.
`
`US. APPLICATION NO. if
`known, see
`37 C.F.R 1.5
`
`10/169~ 33 PCT/DE00/04633
`
`'I§
`
`~~i~ RAr.,,·~-~~ccr/r~~ · .~~· 9 · i, 111i1 ?on'
`-
`
`I
`OCKET NUMBER
`
`I
`ATTORN!?:.
`
`10191/2567
`
`17.181
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`The following fees are submitted:
`
`CALCULATIONS
`
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`
`PTO USE ONLY
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`Basic National Fee (37 CFR 1.492(a)(1)-(5)):
`Search Report has been prepared by the EPO or JPO ................. $890.00
`
`International preliminary examination fee paid to USPTO (37 CFR 1.482) ... $710.00
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`No international preliminary examination fee paid to USPTO (37 CFR 1.482) but
`international search fee paid to USPTO (37 CFR 1.445(a)(2)) ........... $740.00
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`Neither international preliminary examination fee (37 CFR 1.482) nor international
`search fee (37 CFR 1.445(a)(2)) paid to USPTO . . . . . . . . . . . . . . . . . . . . $1 ,040.00
`
`International preliminary examination fee paid to USPTO (37 CFR 1.482) and all
`claims satisfied provisions of PCT Article 33(2)-(4) .................... $100.00
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`ENTER APPROPRIATE BASIC FEE AMOUNT=
`
`$890
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`Surcharge of $130.00 for furnishing the oath or declaration later than 0 20 0 30
`months from the earliest claimed priority date (37 CFR 1.492(e)).
`
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`
`Claims
`
`Number Filed
`
`Number Extra
`
`Rate
`
`Total Claims
`
`Independent Claims
`
`8
`
`1
`
`-20 =
`
`- 3 =
`
`Multiple dependent claim(s) (if applicable)
`
`0
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`0
`
`X $18.00
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`$0.00
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`X$84.00
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`$0.00
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`+ $280.00
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`$0
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`TOTAL OF ABOVE CALCULATIONS=
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`Reduction by 1/2 for filing by small entity, if applicable. Verified Small Entity statement
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`30 months from the earliest claimed priority date (37 CFR 1.492(f)).
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`Fee for recording the enclosed assignment (37 CFR 1.21 (h)). The assignment must be
`accompanied by an appropriate cover sheet (37 GFR 3.28, 3.31 ). $40.00 per property
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`
`NAME 0 /z¥) d<XJ}-
`
`DATE
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`~r
`f) Jt.,()' 1l
`
`Ex. 2002 8/176
`
`

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`Ex. 2002 9/176
`
`

`
`628Rec'dPCT/PTO 88 JUN200Z
`
`[10191/2567]
`
`METHOD OF OPERATING A SPARK IGNITION INTERNAL COMBUSTION
`ENGINE HAVING FUEL INJECTION AT A COLD START
`
`FIELD OF THE INVENTION
`
`The present invention relates to a method of operating a spark
`ignition internal combustion engine having fuel injection at a
`cold start.
`
`BACKGROUND INFORMATION
`To start a spark ignition internal combustion engine having
`
`direct fuel injection, an initial pressure of, for example,
`about 4 bar, may be created using an electrical fuel pump. The
`
`fuel injection may be limited by an angle window, the
`beginning of which may be defined by the moment of opening of
`an inlet valve and the end of which may be determined by the
`combustion chamber pressure established in the cylinder. Since
`
`the pressure in the combustion chamber rises during a
`compression phase and exceeds the initial pressure created by
`the electrical fuel pump starting at a certain piston
`position, the fuel injection should end when the pressure in
`
`the combustion chamber exceeds a certain pressure threshold.
`Otherwise, air may be blown from the combustion chamber into
`the inlet valve, which may cause this air, instead of fuel, to
`be injected through the inlet valve into the combustion
`chamber during a subsequent injection. This may
`
`disadvantageously cause combustion misfiring in the
`corresponding cylinders.
`
`Consequently, the beginning and the end of a fuel injection,
`which is limited by an angle window, are determined by a
`certain rotational angle position of the crankshaft, the
`respective rotational angle positions at the beginning and end
`of the injection enclosing a corresponding variable angle of
`rotation of the crankshaft. The time interval during which the
`
`NY01 488659 v 1
`
`SUBSTITUTE SPECIFICATION
`
`5
`
`10
`
`15
`
`20
`
`25
`
`30
`
`Ex. 2002 10/176
`
`

`
`crankshaft passes through this angle of rotation is
`proportional to the rotational speed of the engine.
`
`5
`
`10
`
`When the internal combustion engine is cold-started, very long
`
`injection times may be required, at least for initial
`combustions. When the fuel injection times are long, the fuel
`reaching the combustion chamber from the first two injections
`
`may combust and cause a significant increase in rotational
`
`speed. Due to the increase in rotational speed, there may not
`be sufficient injection time available for the subsequent
`third and fourth injections to inject an adequate quantity of
`fuel for combustion into the combustion chamber using the
`
`inlet valve (injection valve) . This may cause unwanted
`combustion misfirings during the third and fourth injections
`
`15
`
`at cold start.
`
`20
`
`25
`
`To avoid these unwanted combustion misfirings during the cold
`start, an additional injector (cold start injector), which may
`be positioned in the intake pipe of the engine, injects
`additional fuel into the injection chamber simultaneously with
`
`the intake valve duri~g the cold start. However, it is
`believed that such an additional cold start valve may be
`
`relatively complicated and costly.
`
`SUMMARY OF THE INVENTION
`An exemplary method according to the present invention for
`operating a spark ignition internal combustion engine having
`fuel injection at a cold start includes the following steps:
`
`30
`
`- retarding the spark angle to a cold start value for at least
`
`the first combustion in at least one cylinder of the internal
`combustion engine during a cold start phase, while the fuel
`
`injected into the cylinder is brought to combustion; and
`
`35
`
`- setting the spark angle to normal to end the cold start
`phase.
`
`NY01 488659 v 1
`
`SUBSTITUTE SPECIFICATION
`
`2
`
`j
`
`Ex. 2002 11/176
`
`

`
`Since the spark angle is retarded as much as possible for at
`least the first combustion in at least one cylinder, the fuel
`or fuel-air mixture injected into the combustion chamber is
`burned up in the corresponding ignition, and as such, a small
`
`5
`
`torque is produced by this combustion.
`
`Consequently, the first combustion, using a retarded spark
`angle, results in a slight increase in rotational speed, so
`
`that there may be sufficient injection time available for the
`next injection to inject sufficient fuel into the combustion
`chamber, so that reliable combustion may be ensured, or at
`least made more probable. Further, since the combustion
`
`chamber warms up after the first combustion, less fuel may be
`injected into the combustion chamber to ensure a next
`combustion. Thus, a retarding of the spark angle for at least
`the first combustion in each respective cylinder during a cold
`
`start results in warming of the combustion chamber, while the
`increase in rotational speed of the engine is reduced. In this
`manner, successful combustion for the next injection is
`ensured, or at least made more probable, since less injected
`
`fuel may be required for the following combustion, due to the
`warming of the combustion chamber by the first combustion,
`while at the same time more injection time may be available
`for injecting fuel into the (warmed) combustion chamber due to
`
`the relatively slight increase in rotational speed. Thus,
`combustion misfirings during cold start may be prevented, or
`at least reduced, in a simple and reliable way.
`
`The cold start phase may include a plurality of combustions.
`Due to the low increase in rotational speed during the first
`combustions with a late spark angle, the retardation of the
`
`spark angle is not limited to the first combustion during the
`
`cold start, but may be extended to a desired optimal number of
`combustions ,to achieve effective warming of the combustion
`chamber and to optimize additional cold start parameters.
`
`10
`
`15
`
`20
`
`25
`
`30
`
`35
`
`NY01 488659 v 1
`
`SUBSTITUTE SPECIFICATION
`
`3
`
`1f
`
`Ex. 2002 12/176
`
`

`
`The spark angle is reset to normal in a single step, to set a
`desired operating performance value. This permits a quick
`change from retarded spark angles to appropriate normal spark
`angles after the cold start phase ends, at which an elevated
`
`5
`
`or maximum possible spark angle operating efficiency may be
`
`achieved.
`
`10
`
`15
`
`20
`
`The spark angle is reset to normal in a plurality of
`
`transitional steps, to set a desired operating performance
`value. To avoid too great a change in the spark angle, the
`reset to normal, which ends the cold start phase, may occur in
`several transitional steps, until the desired normal spark
`
`angle is set to utilize maximum possible spark angle operating
`efficiency.
`
`According to an exemplary embodiment of the present invention,
`
`the cold start value is individually set for each cylinder.
`Since the cold starting response of the various cylinders of
`an internal combustion engine may differ, a cold start value
`for each individual cylinder may be calculated and set, to
`ensureeffective prevention of combustion misfirings, while at
`the same time maintaining the maximum possible spark angle
`efficiency.
`
`25
`
`The cold start value may be set during the cold start phase
`
`for the next combustion of each corresponding cylinder. Since
`increased warming of the combustion chamber is achieved during
`the cold start phase with each combustion, a specific cold
`
`start value for each individual cylinder for each individual
`
`30
`
`combustion may be calculated and set. In this manner, the
`
`retardation of the spark angle during the cold start phase is
`kept as small as possible, so that an optimized spark angle
`operating efficiency may be attained, even during the cold
`start phase.
`
`35
`
`The cold start value is set using a retardation setting that
`is adapted to the operating temperature of a particular
`
`NY01 488659 v 1
`
`4
`
`SUBSTITUTE SPECIFICATION
`
`Ex. 2002 13/176
`
`

`
`~:!l
`
`!?-"h
`
`.oij
`
`.,nH.. 11-~>~,il .. mil ... ·iC:iJ .• ,~mi ,.::Ji ~~;:11 ... ::~il
`
`.,;:P du~b n.~;.p ·""'""':!fi "u~~l
`
`.lJ~"i~ i!rn~ .,:fj
`
`~-:il'
`
`ili ~lnili ·~:~;H ,..,.1i., .q::iil :q.,Jj .JJ::::
`
`~i'"'Jl '"'~!;
`
`cylinder. In this manner, the cold start value of the spark
`angle may be kept at the lowest level possible, to achieve
`
`optimal spark angle operating efficiency, while reliably
`
`preventing combustion misfirings during the cold start phase.
`
`5
`
`The spark angle is retarded if the number of ignitions is
`
`smaller than or equal to the value of a parameter, which is
`
`greater than or equal to one and less than or equal to the
`
`number of cylinders in the engine, and the combustion chamber
`
`10
`
`temperature before the first ignition is lower than a
`
`threshold temperature. This permits the retardation during the
`cold start phase to be limited to a defined number of
`
`ignitions, for example, alternative polling. The combustion
`
`chamber temperature before the first ignition may be at least
`
`15
`
`approximately determined from the coolant temperature, the oil
`temperature and/or the intake air temperature of the engine.
`
`The temperature threshold may be, for example, approximately
`
`0°C.
`
`20
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`The Figure is a block diagram of a cold start spark angle
`
`adjustment.
`
`DETAILED. DESCRIPTION
`
`25
`
`The Figure is a block diagram of a cold start spark angle
`
`adjustment, in which the following definitions apply:
`
`Block 10 = start of the cold start spark angle adjustment;
`
`Block 11 = parameter acquisition with the parameters
`
`30
`
`n = freely applicable number where 1 ~ n ~
`
`number of cylinders,
`
`z =number of ignitions;
`
`Block 12 = alternative polling;
`Block 13 = spark angle retardation ~ZW!;
`
`35
`
`Block 14 = spark angle normal setting ~ZWl;
`Block 15 = end of the cold start spark angle adjustment.
`
`NY01 488659 v 1
`
`5
`
`SUBSTITUTE SPECIFICATION
`
`Ex. 2002 14/176
`
`

`
`.. i!i
`
`H~""i.!
`
`,;H
`
`u~•z:.tJ . ..,,,.!'if •~~•!.ft n".:.jl
`.,.;it. ji.Jl .... l!~, ij;;Js "";~~ll .. ::;t~ .:~11 .::::ii
`
`.»~~
`
`1.i..,ll i!"~!;
`.;lf'
`il''"h •=il
`tlmil ''~::2U .... ~ii .. lt::ii ii •. ~ll u:;~:;
`
`t~!!
`
`·m
`
`5
`
`10
`
`15
`
`20
`
`When the internal combustion engine is started (Block 10), the
`cold start spark angle adjustment is started automatically.
`The freely applicable number designated as n (for example 1 ~
`n ~ number of cylinders in the engine) and the number of
`
`ignitions designated as z are defined as parameters (Block
`11). These parameters n and z are suitably determined. Before
`the first ignition, z has the value 0. When the engine is cold
`started, an automatic alternative polling (Block 12)
`
`determines whether the number of ignitions z is smaller than
`or equal to the number of cylinders n in the engine (z ~ n ?),
`and whether, at the same time, the combustion chamber
`temperature in the cylinder before the first ignition is lower
`than a temperature threshold Ts (To< Ts ?) . If so (i.e., if
`both conditions are fulfilled at the same time and the
`alternative polling is answered with yes), spark angle
`retardation (Block 13) is activated for the next ignition z+1.
`
`The alternative polling (12) is continued until the number of
`ignitions z is greater than the number of the parameter n.
`Starting from this moment in the operation, the alternative
`polling (Block 12) is thus answered with no, so that the spark
`
`angle retardation, which was activated up to this point (Block
`13 with z
`~ n) , is canceled by an appropriate advancement of
`the spark angle (Block 14) . After this setting of the spark
`angle to normal (Block 14), the cold start angle adjustment is
`
`25
`
`ended (Block 15).
`
`In the exemplary embodiment described with reference to the
`Figure, the retardation of the spark angle is set to a cold
`
`start value for a number of ignitions z, which corresponds to
`the number of the parameter n. This spark angle retardation
`
`30
`
`guarantees, or at least makes more probable, that the fuel or
`fuel-air mixture injected into the cylinder throughout the
`
`entire cold start phase is brought to combustion. Since the
`spark angle is retarded for the initial combustions, little or
`no torque is produced during the cold start, so that the
`increase in rotational speed is slight. As a result, a
`relatively long time may be available for all injections
`
`35
`
`NY01 488659 v 1
`
`SUBSTITUTE SPECIFICATION
`
`6
`
`1
`
`Ex. 2002 15/176
`
`

`
`.IJ""·'il l!''~h .~J
`
`lH <n~ .. ti ~~~ll ~.~u ... ·lt::;;i 11 .... il 11:~:::
`
`~:~·
`
`-'!.1"'11 ..... tl
`
`during the cold start phase, and, for example, for the second
`through the last injections (z > 1 to z = n), to enable a
`sufficient quantity of fuel or fuel-air mixture for successful
`combustion to be injected into the respective cylinder. Thus,
`
`5
`
`by retarding the spark angle, combustion misfirings during the
`cold start phase may be reliably prevented or reduced.
`
`Furthermore, the initial combustions in the respective
`
`cylinder produce a warming of the combustion chamber, for
`which reason the fuel or fuel~air mixture required to be
`
`10
`
`injected into the respective cylinder to permit reliable
`combustion is reduced compared to a colder combustion chamber
`
`for the next ignition, so that the spark angle requires less
`retardation with increasing warming of the combustion chamber,
`due to the initial combustions during a cold start phase, to
`guarantee, or at least make more probable, successful
`
`combustion of the injected fuel or fuel-air mixture throughout
`the entire cold start phase. In this manner, the spark angle
`operating efficiency may be optimized during the cold start
`phase of an internal combustion engine, since, for each
`ignition in the cold start phase, the spark angle is retarded
`only as required for successful combustion at the time of all
`ignitions. This may prevent combustion misses.
`
`After a certain, individually adjustable number of ignitions
`z, the spark angle is set to normal, to limit the cold start
`phase to as few ignitions as possible and thus to operate the
`internal combustion engine at high spark angle operating
`
`15
`
`20
`
`25
`
`efficiency with the largest possible spark angles (advanced
`ignition point) as quickly as possible. The spark angle
`
`30
`
`retardation should apply to the first ignition during cold
`starting of a cylinder of the engine, to keep the duration of
`
`the start as short as possible. A plurality of transitional
`steps may increase spark angle advancement in the transition
`from the spark angle retardation to the normal spark angle
`setting. The optimum retarded spark angle value (cold start
`
`35
`
`NY01 488659 v 1
`
`SUBSTITUTE SPECIFICATION
`
`7
`
`~
`
`Ex. 2002 16/176
`
`

`
`.lt'~'!; ""'·"'f;
`l!"':h l1~ _JJl'
`i!•":\1
`"'.lj .. ;ji .,,:;;;; ,.ill .. l!;::~ li .. Jlll::::;
`
`value) may be calculated and individually set for each
`cylinder of the internal combustion engine.
`
`NY01 488659 v 1
`
`8
`
`SUBSTITUTE SPECIFICATION
`
`Ex. 2002 17/176
`
`

`
`~----------------~----------
`
`What is claimed is:
`
`A method of operating a spark ignition internal combustion
`fuel injection at a cold start, characterized by
`ollowing procedural steps:
`(13) of the spark angle to a cold start value at
`the first combustion in at least one cylinder of the
`least
`engine during a cold start phase, the fuel
`internal
`the cylinder being brought to combustion;
`injected
`- setting of he spark angle to normal (14) to end the cold
`start phase.
`
`2. The method acco ding to Claim 1, wherein the cold start
`phase includes a plu ality of combustions.
`
`3. The method according
`wherein the spark angle
`to set a desired operating
`
`one of the preceding Claims,
`to no~~ar
`in a single step
`nee value.
`
`/
`
`the preceding C
`normal (14) in
`
`performance
`
`4. The method according to
`wherein the spark angle is
`of transitional
`value.
`
`5. The method according to
`wherein the cold start value
`individually.
`
`6. The method according to one of the prec
`wherein the cold start value is set during
`phase in each case for the next combustion
`cylinder.
`
`7. The method according to one of the preceding C
`wherein the cold start value is set using a retard
`adjusted to the operating temperature of the respect've
`cylinder.
`
`(13)
`
`NY01 488657 v 1
`
`9
`
`JD
`
`----------------------------------------------------------------
`
`Ex. 2002 18/176
`
`

`
`"'-
`\
`
`8. The metho~ ccording to one of the preceding Claims,
`(13) takes place on condition that the
`(z) is smaller than or equal to the value
`-,
`by ~efinition is greater than or
`than br equal to the number of
`and at the same
`before the first
`
`of a parameter (n)
`equal to one and
`cylinders in the
`time the combustion
`ignition
`
`NY01 488657 v 1
`
`10
`
`Ex. 2002 19/176
`
`

`
`ABSTRACT OF THE DISCLOSURE
`A method is provided for operating a spark ignition internal
`
`combustion engine having fuel injection at a cold start. The
`
`method retards the spark angle to a cold start value at least
`for the first combustion in at least one cylinder of the
`
`5
`
`internal combustion engine during a cold start phase, the fuel
`injected into the cylinder being brought to combustion, and
`
`the method sets the spark angle to normal, to end the cold
`
`start phase.
`
`NY01 488659 v 1
`
`SUBSTITUTE SPECIFICATION
`
`9
`
`,,
`
`--
`
`Ex. 2002 20/176
`
`

`
`[10191/2567]
`
`'.
`
`;~ •• i
`
`DECLARATION AND POWER OF ATTORNEY
`' ·.'r ~ • ":'1/
`
`'
`
`As a below named inventor, I hereby declare that:
`
`My residence, post office address and citizenship
`are as stated below next to my name.
`
`I believe I am the original, first and sole inventor
`
`(if only one name is listed below) or an original, first and
`joint inventor (if plural names are listed below) of the
`subject matter which is claimed and for which a patent is
`sought on the invention entitled METHOD OF OPERATING A SPARK
`
`IGNITION INTERNAL COMBUSTION ENGINE HAVING FUEL INJECTION AT A
`
`COLD START,
`
`the specification of which was filed as
`
`International Application PCT/DE00/04633 on December 27, 2000;
`
`I hereby state that I have reviewed and understand
`the contents of the above-identified specification, including
`the ·claims.
`
`I acknowledge the duty to disclose information which
`is material to the examination of this application in
`accordance with Title 37, Code of Federal Regulations,
`§ 1.56(a).
`
`I hereby claim foreign priority benefits under Title
`35, United States Code, § 119 of any foreign application(s)
`for patent or inventor's certificate listed below and have
`
`also identified below any foreign application(s) for patent or
`inventor's certificate having a filing date before that of the
`application on which priority is claimed:
`
`NY01 488652 v 1
`
`Ex. 2002 21/176
`
`

`
`PRIOR FOREIGN APPLICATION{S)
`
`Number
`
`Country
`filed
`
`Day/month/year
`
`Priority Claimed
`Under 35 USC 119
`
`199 63 914.0
`
`Federal
`Republic of
`Germany
`
`31 December 1999 Yes
`
`And I hereby appoint Richard L. Mayer (Reg. No.
`22,490) and Gerard A. Messina (Reg. No. 35,952) my attorney(s)
`
`with full power of substitution and revocation, to prosecute
`this application and to transact all business in the Patent
`and Trademark Office connected therewith.
`
`Please address all communications regarding this
`application to:
`
`KENYON & KENYON
`One Broadway
`New York, New York 10004
`CUSTOMER NO. 26646
`
`Please direct all telephone calls to Richard L.
`Mayer at (212) 425-7200.
`
`I hereby declare that all statements made herein of
`
`my own knowledge are true and that all statements made on
`information and belief are believed to be true; and further
`that these statements were made with the knowledge that
`willful false statements and the like so made are punishable
`
`by fine or imprisonment, or both, under Section 1001 of Title
`18 of the United States Code and that such willful and false
`
`statements may jeopardize the validity of the application or
`any patent issued thereon.
`
`NY01 488652 v 1
`
`Page 2 of 8
`
`Ex. 2002 22/176
`
`

`
`Inventor: Klaus JOOS
`
`Inventor's Signature:
`
`Date:
`
`Residence:
`
`In Der Eichhaelde 3
`74399 Walheim
`Federal Republic of Germany
`
`Citizenship:
`
`Federal Republic of Germany
`
`Post Office Address:
`
`Same as above.
`
`NY01 488652 v 1
`
`Page 3 of 8
`
`Ex. 2002 23/