ATTORNEY DOCKET NOL: 11391.110028
`IN THE UNITED STATES PATENT AND TRADEMARK OFFICE
`
`Applicant: Daniel R. Cohn et al.
`
`Examiner: Not Yet Assigned
`
`Serial No.: Not Yet Assigned
`
`Art Unit: Not Yet Assigned
`
`Filme Date: Filed Herewith
`
`Confirmation No.: Not Yet Assigned
`
`Title:
`
`PUEL MANAGEMENT SYSTEMFOR VARIABLE ETHANOL OCTANE
`ENHANCEMENT OF GASOLINE ENGINES
`
`PRELIMINARY AMENDMENT
`
`Via EFS-Web
`Commissioner for Patents
`P.O. Box 1450
`Alexandria, VA 22313-1450
`
`Dear Sir:
`
`INTRODUCTORY COMMENTS
`
`Please preliminarily amend the application as follows:
`
`FORD Ex. 1102, page 1
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`FORD Ex. 1102, page 1
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`

`Application No. Filed Herewith
`Date: May 27, 2011
`
`Docket No.: 11381.110928
`
`in the Specification
`
`Please amend paragraph [0001] on page 1 as follows:
`
`This application is a contiouation of United States Patent Application No. 12/815,842
`
`filed June 15, 2010 which is a continuation of United States Patent Application No. 12/329,729
`
`tiled on December 8, 2008 which is a continuation of United States Patent Application No.
`
`11/840,719 filed on August 17, 2007, whichis a continuation of United States Patent Application
`
`No. 10/991,774, which is nowissued as United States Patent No. 7,314,033.
`
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`co seeeceeeeteenernRAEIIIEEE
`
`Application No. Filed Herewith
`Date: May 27, 2011
`
`1-56 (cancelled)
`
`Please add the following new clairns:
`
`in the Cigims
`
`Docket No.: 1 138£,1 10928
`
`57. (new) A turbocharged or supercharged spark ignition engine which is fueled with gasoline
`
`and ethanol where ethanol is introduced into the engine in such a way that the vaporized cooling
`
`provided bythe ethanol enhances the octane number more thanit is enhanced bythe intrinsic
`
`octane number of the ethanol.
`
`38. (new) The turbocharged or supercharged spark engine of claim 57 where liquid ethanolis
`
`directly injected into the engine cylinders.
`
`59, (new) The turbocharged or supercharged spark ignition engine of claim 58 where the ethancl
`
`iS injected so as to have a greater concentration in the end gas region.
`
`60. (new) The turbocharged or supercharged spark ignition engine of claim 59 where the ethano!
`
`has a higher concentration near the wall of the cylinder.
`
`61. (new) The turbocharged or supercharged spark ignition engine of clairn 60 further inchiding
`
`swith
`
`62. (new) The turbocharged or supercharged spark ignition engine of claim 59 where the knock
`
`resistance is increased relative to uniform distribution of ethanol in the cylinder.
`
`63. (mew) A turbocharged or supercharged spark ignition engine of claim 37 where the spark
`
`retard is changed to prevent knock from occurring when the ethanol energyfraction is reduced,
`
`64. (new) A turbocharged or supercharged spark ignition engine where ethanol is introduced into
`
`the engine in such a waythat it provides a 35 octane number increase over gasoline and the
`
`FORD Ex. 1102, page 3
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`Application Ne. Filed Herewith
`Date: May 27, 201)
`
`Docket No.: 11381), 110928
`
`octane numberincrease from vaporization cooling is greater than the octane numberincrease
`
`trom the intrinsic octane of ethanol.
`
`65. (new) The turbocharged or supercharged spark ignition engine of claim 64 where liquid
`
`ethanol is directly injected into the engine cylinders.
`
`66. (new) The turbocharged or supercharged spark ignition engine of claim 64 where the ethanoi
`
`is injected so to have a greater concentration in the end gas region.
`
`67. (new) The turbocharged or supercharged spark ignition engine of claim 64 where the ethanol
`
`has a higher concentration near the wall of the cylinder.
`
`68. (new) The turbocharged or supercharged spark ignition engine ofclaim 64 further including
`
`swirl.
`
`69. (new) The turbocharged or supercharged spark ignition engine of claim 64 where the knock
`
`resistance is increased relative to untform distribution of ethanol in the cylinder.
`
`70. (mew) A turbocharged or supercharged spark ignition engine of claim 64 where the spark
`
`retard is changed to prevent knock from occurring when the ethanol energy fraction is reduced.
`
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`Application No.: Filed Herewith
`Date: May 27, 2011
`
`Docket No.: 11381.1106928
`
`Remarks
`
`Claims 1-56 have been cancelled. New claims 57-70 are being added. No newmatteris
`
`being introduced.
`
`Fyespectfally Submitted,
`f
`” EAM } ERARZfont
`Sam (Bo) Pasternack
`Registration Number: 29576
`Massachusetts Institute of Technology
`One Cambridge Center
`Room NE18-501
`Cambridge, MA 02142
`617 258.7171
`
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`o
`
`“eo
`we
`
`DECLARATION
`
`& As a below named inventor, I hereby declare that:
`&
`Myresidence, post offive address and citizenship are as stated below next to my name,
`re rene
`
`I believe I am an original, first and joint inventor ofthe subject matter which is claimed and
`for which a patent is sought on the invention entitled:
`
`FUEL MANAGEMENT SYSTEM FOR VARIABLE ETHANGL OCTANE
`ENHANCEMENT OF GASOLINE ENGINES
`
`the specification of which {I authorize Choate, Hall & Stewart to check one of the following
`three choices, and fill in the blanks,if applicable):
`
`
`
`is attached herets
`
` X__. was filed on November 18, 2004 as Application Serial No. 10/991.774 sad
`
`
`
`was filed as PCT international application No.
`
`and was amended under PCT Article 19
`Gf applicable).
`
`on
`ou
`
`[hereby state that I have reviewed and understood the contents of the above-identified
`specification, including the claims, a3 amended by any amendment referred to above.
`
`l acknowledged the duty to disclose information which is material to the examination of
`this application in accordance with Title 37, Code ofFederal Regulations, §1.56.
`
`Thereby 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 alse identified
`below any foreign application for patent or inventor's certificate having a filing date before that
`of the application on which priority is claimed:
`
`Prior Foreign Application(s):
`
`Priority Claimed
`
`(Nomber)
`
`(Country)
`
`(Day/Month/Year/Filed)
`
`Yes No
`
`(Number}
`
`(Country)
`
`(Day/Month/Year/Filed}
`
`Yea No
`
`Page 1 of 3
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`I hereby claim the benefit under Title 35, United States Cede, $120 of any United States
`application(s) or PCT international application(s) designating the United States of America listed
`below and, insofar as the subject matter ofeach of the claimsof this application is not disclosed
`in the prior United States application in the manner provided by the first paragraph of Title 35,
`United States Code, §112, I acknowledge the duty to disclose material information as defined in
`Title 37, Code of Federal Regulations, §1.56 which became available between the fling date of
`the prior application and the national or PCT international filing date of this application:
`
`(Application Serial No.)
`
`(filing date}
`
`(status-patented, pending, abandoned)
`
`(Application Serial No.)
`
`(filling date)
`
`(status-patented, pending, abandoned)
`
`PCT Applications designating the United States:
`
`(PCT Appl. No.)
`
`(USS.N)
`
`(status-patented, pending, sbandoned)
`
`I hereby claim the benefit under Title 35, United States Code, §119(e) ofany United States
`provisional application(s) listed below and, insofar as the subject matter of each of the claims of
`this application is not disclosed in the prior United States application in the manner provided by
`the first paragraph of Title 35, United States Code, §112, L acknowledge the duty to disclose
`information which is material to patentability as defined in Title 37, Code ofFederal
`Regulations, §1.56 which became available between the filing date of the prior application and
`the national filing date of this application.
`
`rovisional Application(s):
`
`(Application Serial No.)
`
`(filing dats)
`
`(status)
`
`(Application Serial No.)
`
`(filing date}
`
`-
`
`(status)
`
`Thereby declare that all statements made herein of my own knowledgeare 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 ofTitle 18 ofthe United State
`Code and that such willful false statements may jeopardize the validity of the application or any
`patents issued thereon.
`
`Page 2 of 3
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`FORD Ex. 1102, page 7
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`

`

`Citizenship
`
`Inventor's signal
`
`Residence
`
`
`
`Residence
`
`
`
`Page 3 of 3
`
`FORD Ex. 1102, page 8
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`

`

`Electronic Patent Application Fee Transmittal
`
`Filing Date:
`
`Title of Invention:
`
`FUEL MANAGEMENTSYSTEM FOR VARIABLE ETHANOL OCTANE
`ENHANCEMENT OF GASOLINE ENGINES
`
`
`
`Application Number:
`
`Post-Allowance-and-Post-Issuance:
`
`
`
`First Named Inventor/Applicant Name: Daniel R. Cohn
`
`Filer:
`
`Attorney Docket Number:
`
`Sam Pasternack/Ellen Byal
`
`11381.110928
`
`Filed as Large Entity
`
`
`Utility under 35 USC 111(a) Filing Fees
`
`Description
`
`Fee Code
`
`Quantity
`
`Sub-Total in
`USD(S$)
`
`Basic Filing:
`
`Utility application filing
`
`
`Utility Search Fee
`
`
`
`Miscellaneous-Filing:
`
`Patent-Appeals-and-Interference:
`
`FORD Ex. 1102, page 9
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`

`Extension-of-Time:
`
`Miscellaneous: Total in USD ($)
`
`FORD Ex. 1102, page 10
`IPR2020-00013
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`

`

`Electronic AcknowledgementReceipt
`
`EFS ID:
`
`10184071
`
`
`
`Application Number: 13117448
`
`International Application Number:
`
`Confirmation Number:
`
`
`Title ofInvention:
`
`FUEL MANAGEMENTSYSTEM FOR VARIABLE ETHANOL OCTANE
`ENHANCEMENT OF GASOLINE ENGINES
`
`
`
`First Named Inventor/Applicant Name:
`
`Daniel R. Cohn
`
`Customer Number:
`
`91197
`
`
`
`Filer: Sam Pasternack/Ellen Byal
`
`Filer Authorized By:
`
`Sam Pasternack
`
`
`
`Attorney Docket Number: 11381.110928
`
`Receipt Date:
`
`27-MAY-2011
`
`Filing Date:
`
`
`
`Time Stamp: 13:24:12
`
`Application Type:
`
`Paymentinformation:
`
`Submitted with Payment
`
`Utility under 35 USC 111(a)
`
`
`Charge any Additional Fees required under 37 C.F.R. Section 1.19 (Document supply fees)
`
`Authorized User
`
`O'BRIEN,DANIEL
`
`The Director of the USPTO is hereby authorized to charge indicated fees and credit any overpayment as follows:
`Charge any Additional Fees required under 37 CF.R. Section 1.17 (Patent application and reexamination processing fees)
`
`FORD Ex. 1102, page 11
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`FORD Ex. 1102, page 11
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`Charge any Additional Fees required under 37 C.F.R. Section 1.21 (Miscellaneous fees and charges)
`
`File Listing:
`Document
`File Size(Bytes)/
`DocumentDescription
`
`P
`Number
`263130
`
`
`
`File Name Message Digest|Part/.zip| (if appl.)
`
`Application Data Sheet
`
`11381110928ads.pdf
`
`4e1cb91b3a7e18370d8da79302c0bf9780:
`b7b67
`
`This is not an USPTO supplied ADSfillable form
`
`Information:
`
`Specification
`
`11381110928spec.pdf
`
`Drawings-only black and whiteline
`drawings
`
`11381110928figs.pdf
`
`
`
`
`
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`
`
`Warnings:
`Information:
`
`1272923
`
`
`Warnings:
`Information:
`
`Information:
`
`Preliminary Amendment
`
`11381110928PA.pdf
`
`Oath or Declaration filed
`
`11381110928dec.pdf
`
`Information:
`
`Fee Worksheet (PTO-875)
`
`fee-info.pdf
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`31603
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`d5c3
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`FORD Ex. 1102, page 12
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`This AcknowledgementReceipt evidences receipt on the noted date by the USPTO ofthe indicated documents,
`characterized by the applicant, and including page counts, where applicable. It serves as evidence of receipt similar to a
`Post Card, as described in MPEP 503.
`
`
`New Applications Under35 U.S.C. 111
`If a new application is being filed and the application includes the necessary componentsfora filing date (see 37 CFR
`1.53(b)-(d) and MPEP 506), a Filing Receipt (37 CFR 1.54) will be issued in due course and the date shownonthis
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`National Stage of an International Application under 35 U.S.C. 371
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`national stage submission under 35 U.S.C. 371 will be issued in addition to the Filing Receipt, in due course.
`
`the application.
`
`New International Application Filed with the USPTO as a Receiving Office
`If a new international application is being filed and the international application includes the necessary componentsfor
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`PYO/SBi714 (44-08)
`Approved for use through 09/30/2010, OMB 0651-0032
`U.S. Patent and Trademark Office; U.S. DEPARTMENT OF COMMERCE
`Under the Paperwork Reduction Act of 1995, no persons are required to respond to 4 collection of information unless it contains a valid OMcontrol number.
`
`| Attorney Docket Number
`|
`| 44981.110928
`
`| Application Data Sheet 37 CFR 1.76!
`.
`
`[
`_| Application Number
`|
`FUEL MANAGEMENT SYSTEM FOR VARIABLE ETHANOL OCTANE ENHANCEMENT OF GASOLINE
`Title of Invantion
`ENGINES
`| The application data sheet is part of the provisional or nonprovisional application for whichitis being submitted. The following form contains the
`i bibliographic data arranged in a format specified by the United States Patent and Trademark Office as outlined in 37 CFR 1.76.
`| This document may be completed elactranically and submitted to the Office in electronic format using the Electronic Filing System (EFS) or the i
`nnanneerenceannem
`document may be printed and included in a paperfited application.
`!
`
`|
`
`Secrecy Order 37 CFR 5.2
` Applicant Iinformation:
`
`
`
`—
`|
`
`
`
`
`Applicant 1
`i
`ey
`@ inventor
`|
`sgal
`Representative
`under
`35
`U.S.C.
`11
`[OP
`f
`interest
`5.0.14
`| Applicant Authority @Inventor| OLega Rep aseniative
`under 35 U.S.C.
`1 ?
`OO arly of Interest under 35 U.S.C.
`118
`!
`
`Prefix. Given Name
`; Middle Name
`| Family Name
`Suffix
`
`1
`-
`-
`1
`oo
`i Daniel
`LR.
`i Cohn i |
`
`
`
`Residence Information (Select One)ye US Residency () Non US Residency “C) Active US‘Site8Service
`| City| Cambridge
`| State/Provincee| MA
`Country ofResidence
`
`zonenie
`:
`|
`__)
`| Citizenship under 37 CFR 1.41(b}|us
`
`
`Mailing Address of Applicant:
`——
`_Address 4
`)} 100 Mernorial Drive Apt. 41-22 B
`
`|StatelProvincee|MA:
`
`| 02142
`Country
`us
`‘
`
`nserat GivenNanName
`
`| Bromberg esidence Information (Select One} 5 US Residency (©) Non US Residency ©) Active US Military Service
`| Leslie
`
`op
`—
`
`ityTSharon | State/Province | MA | Country of Residencd| US |
`
`
`
`SEUUETnTanEIEEEERRRREEDERPPUEEFenee
`en
`aaoa
`
`Citizenship under 37 CFR 4 41(b)
`| us
`4
`_ Mailing Address of Applicant:
`
`
`Address 4
`176 Wilshire Drive
`Address 2
`|
`MA
`State/Province
`City
`| Sharon
`pannnnnnn fetanaanTT
`es -
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`Pcountry[
`| 02087
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`
`
`| ApplicantZ
`pplicanttAuthority@lnventor||OlegalRIRepresentative under 36 U.S.C. 147 |Party of Interest under 35 U.S.C. 44
`
`
`PrefixGiven Name
`|Middle Name
`{ Family Name
`ISuffix
`
`| John
`B,
`i Heywood© oe a—
`
`Residence information (Select One} @) US Residency
`C) Non US Residency
`(©) Active US Miltary Service
`|
`City| Newtonviie
`_State/Province | MA
`| Country of Residencé | US
`|
`ee f
`H
`‘
`5
`
`;
`
`;_A
`
`
`
`
`
`FORD Ex. 1102, page 14
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`
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`PTCISBIN14 (11-085
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`| AttorneyDocket Number 14381,110928
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`| Application Data Sheet 37 CFR 1.76 -—-- —-— —
`|
`|
`| Application Number
`Title of Invention | ONCEMENT SYSTEM FOR VARIABLE ETHANOL OCTANE ENHANCEMENT OF GASOLINE
` -~~ 1
`| Citizenshipunder 37 CFR 4.44)
`| US
`|
`| Mailing Address of Applicant:
`| Address 4
`| 248 Mili St
`OO |
`
`[Addess?SSO™S™C~C~S~CSsCSSSSSeee—_
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`(Siy_| Newonie__|StatProvince| MA
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`
`| Customer Number
`91197
`7
`-
`-
`fon~
`
`|Email Address -
`|
`-
`|
`Application information:
`Title of the invention
`GASOLINE ENGINES
`
`
`VrttienaFéhaineantinn|.FUEL MANAGEMENT SYSTEM FOR VARIABLE ETHANOL OCTANE ENHANCEMENT OF _—*
`
`| Attorney Docket Number|
`11981.110928
`| Smait Entity Status Claimed |
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`! ——SaCea er
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`| Application Type
`Nonprovisional
`| Subject Matter
`Utility
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`{ Sub Class (if any)
`{
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`Lacannenaceeeeerncernennnnennnneennerenccbeeenn pe
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`-
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`«6G. 122(b) and cerify that the invention disclosed in the attached application has not and will not be the subject of
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`PTOSB/14 (44-08)
`Approved for use through 69/30/2010. OMB 0651-0032
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`| Application Data Sheet 37 CFR 1.76 |
`St nnI
`| Application Number
`Title ofInvention | FUELMANAGEMENTSYSTEM FORVARIABLE ETHANOLOCTANE ENHANCEMENTOFGASOLINE
`[
`
`| Customer Number 91197
`
`a
`
`}
`
`ENGINES
`
`|
`
`4
`
`
`
`|
`
`i
`
`|
`:
`1
`
`| [ L
`
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`This section allowsffor the applicant to sither claim benefit under 35 USC. 4149/e), 120, 424, or 365({c) or indicate National Stage
`| entry fram a PCT anpiication. Providing this information in the application daia sheet constitutes the specific reference required by
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`35 U.S.C. 119(e} or 120, and 37 CFR 1.78(ak(2) or CFR 1.73(ai(4), and need not otherwise be made part of the specification.
`
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`FORD Ex. 1102, page 16
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`Title ofInvention | reanencenens SYSTEM FORVARIABLE ETHANOLOCTANE,ENHANCEMENTOF GASOLINE
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`FORD Ex. 1102, page
`IPR2020-000 13
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`Fuel Management System for Variable Ethanol Octane Enhancement
`
`of Gasoline Engines
`
`[6601]
`
`This applicationis a continuation of United States Patent Application No. 11/840,719
`
`filed on August 17, 2007, which is a continuation of United States Patent Application No.
`
`10/991,774, which is now issued as United States Patent No. 7,214,033.
`
`BACKGROUND
`
`[8002]
`
`This invention relates to spark ignition gasoline engines utilizing an antiknock agent
`
`which is a liquid fuel with a higher octane number than gasoline such as cthanol to improve
`
`engine efficiency.
`
`16003]
`
`It is known that the efficiency of spark ignition (SD) gasoline engines can be increased
`
`by high compression ratio operation and particularly by engine downsizing. The engine
`
`downsizing is made possible by the use of substantial pressure boosting from either
`
`turbocharging or supercharging. Such pressure boosting makes it possible to obtain the same
`
`performance in a significantly smaller engine. See, J. Stokes, er al., “A Gasoline Engine
`
`Concept For Improved Fuel Economy The Lean-Boost System,” SAE Paper 2001-01-2902,
`
`The use of these techniques to increase engine efficiency, however, is limited by the onset of
`
`engine knock. Knockis the undesired detonation of fuci and can severely damage an engine. If
`
`knock can be prevented, then high compression ratio operation and high pressure boasting can be
`
`uscd to increase engine efficicncy by up to twenty-five percent.
`
`[6004] Octane numberrepresents the resistance of a fuel to knocking but the use of higher
`
`octane gasoline only modestly alleviates the tendency to knack. For example,the difference
`
`between regular and premium gasoline is typically six octane numbers. That is significantly less
`
`than is nceded to realize fully the efficiency benefits of high compression ratio or turbocharged
`
`operation. There is thus a need for a practical means for achieving a much higherlevel of octane
`
`enhancement 50 that engines can be operated much more efficiently.
`
`tof ts
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`{8005}
`
`itis known to replace a portion of gasoline with small amounts of ethanol added at the
`
`refinery. Ethanol has a blending octane number (ON) of 119 (versus 95 for premium gasoline)
`
`(see J.B. Heywood, “Internal Combustion Engine Fundamentals,” McGrawHill, 1988, p. 477)
`
`and is also attractive because it is a renewable energy, biomass-derived fuel, but the small
`
`amounis of ethanol that have heretofore been added to gasoline have hada relatively small
`
`impact on engine performance. Ethanol is much more expensive than gasoline and the arnount
`
`ofethanol that is readily available is much smaller than that of gasoline because ofthe relatively
`
`limited amount of biomass thatis available for its production. An object ofthe present invention
`
`is to minimize the amount of ethanol or other antiknock agent that is used to achieve a given
`
`level of engine efficiency increase. By restricting the use of ethanolto the relatively smal!
`
`fraction of time in an operating cycle when it is needed to prevent knock in a higher load regime
`
`and by minimizing its use at these times, the amount of ethanol that is required can be limited to
`
`a relatively small fraction of the fuel used by the spark ignition gasoline engine.
`
`SUMMARY
`
`{6666|
`
`In one aspect, the invention is a fucl management system for efficient operation of a
`
`spark ignition gasoline engine including a source of an antiknock agent such as ethanol. An
`
`injector directly injects the ethanal into a cylinder of the engine and a fuel management system
`
`controis injection of the antiknock agent into the cylinder to control knock with mininium use of
`
`the antiknock agent. A preferred antiknock agent is cthanol. Ethanol haa a high heat of
`
`vaporization So that there is substantial cooling of the air-fuel charge to the cylinder when it is
`
`injected directly into the engine. This cooling effect reduces the octane requirementofthe
`
`engine by a considerable amount im addition to the improvement in knock resistance from the
`
`relalively high octane number of ethanol, Methanol, tertiary butyl alcohol, MTBE, ETBE, and
`
`TAME may also be used. Wherever cthanol is used herein it is to be understood that other
`
`antiknock agents are conternplated.
`
`{0607}
`
`The fuel management system uses a fuel management control system that may use a
`
`microprocessor that operates in an open loop fashion on a predetermined correlation between
`
`octane number enhancement and fraction of fuel provided by the antiknock agent. To conserve
`
`the ethanol, it is preferred that it be added only during portions of a drive cycle requiring knock
`
`resistance and that its usc be minimized during these times. Altematively, the gasoline engine
`
`2of tS
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`may include a knock sensor that provides a feedback signal to a fucl management
`
`microprocessor system {6 minimize the amount of the ethanol added to prevent knock in a closed
`
`loop fashion.
`
`{6608}
`
`in one embodiment the injectors stratify the ethanol to provide non-uniform deposition
`
`within a cylinder. Fer example, the cthanel may be injected proximate to the cylinder walls and
`
`swirl can create a ring of ethanol near the walls.
`
`[6009]
`
`In another embodiment ofthis aspect ofthe invention, the system includes a measure
`
`of the amount of the antiknock agent such as ethanol in the source containing the antiknock agent
`
`to control turbocharging, supercharging or spark retard when the amount of ethanol is low.
`
`108101
`
`The direct injection of ethanol provides substantially a2 13°C drop in temperature for
`
`every ten percent of fuel energy provided by ethanol. An instantaneous octane enhancement of
`
`at least 4 octane numbers may be obtained for every 20 percentof the engine’s encrgy coming
`
`from the ethanol.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`[6011]
`
`FIG. tis a block diagram of one embodimentof the invention disclosed herein.
`
`{9012}
`
`FIG. 2 is a graph of the drop in temperature within a cylinder as a function of the
`
`fraction of energy provided by ethanol.
`
`[6013]
`
`FIG. 3 is a schematic illustration of the stratification of cooler ethanol charge using
`
`direct mjection and swirl motion for achieving thermal stratification.
`
`10014)
`
`FIG, 4 is a schematic illustration showing ethanol stratified in an inlet manifold,
`
`{6615}
`
`FIG. Sis a block diagram of an embodiment of the invention in which the fuel
`
`management microprocessor is used fo control a turbocharger and spark retard based upon the
`amount of ethanol in a fuel tank.
`
`DEFAILED DESCRIPTION
`
`{GG16] With reference first to FIG. I, a spark ignition gasoline engine 10 includes a knock
`
`scnsor 12 and a fuel management microprocessor system 14, The fuel management
`
`microprocessor system 14 conirois the direct injection of an antiknock agent suchas ethanol
`
`from an cthanol tank 16. Phe fucl management microprocessor system 14 also controls the
`
`delivery of gasoline from a gasoline tank 18 into cngine manifold 26. A turbocharger 22 is
`
`3 of 15
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`provided to improve the torque and power density of the engine 16. The amount of ethanol
`
`injection is dictated either by a predetermined correlation between octane number enhancement
`
`and fraction of fuel that is provided by ethanol in an open loop system or by a closed loop
`
`control system that uses a signal from the knock sensor 12 as an input fo the fuel managernent
`
`microprocessor i4_ In bothsituations. the fucl management processor 14 will minimize the
`
`amount of ethanol added to a cylinder while still preventing knock.
`
`It is also contemplated that
`
`the fuel manapement microprocessor system 14 could provide 2 combination of open a