John Alan Heywood, 612611 Buena Vista Cir, Gainesville, GA 30504

7028644, Apr 18, 2006

Oct 2, 2003

10/677975

Daniel R. Cohn - Chestnut Hill MA, US
Leslie Bromberg - Sharon MA, US
Alexander Rabinovich - Swampscott MA, US
John B. Heywood - Newton MA, US

Massachusetts Institute of Technology - Cambridge MA

F02B 75/12

123 1A, 12356811, 12340621

A hydrogen enhanced engine system using high compression ratio is optimized to minimize NOx emissions, exhaust aftertreatment catalyst requirements, hydrogen requirements, engine efficiency and cost. In one mode of operation the engine is operated very lean (equivalence ratio φ=0. 4 to 0. 7) at lower levels of power. Very lean operation reduces NOx to very low levels. A control system is used to increase equivalence ratio at increased torque or power requirements while avoiding the knock that would be produced by high compression ratio operation. The increased equivalence ratio reduces the amount of hydrogen required to extend the lean limit in order to avoid misfire and increases torque and power. The engine may be naturally aspirated, turbocharged, or supercharged.

7225787, Jun 5, 2007

Apr 6, 2005

11/100026

Leslie Bromberg - Sharon MA, US
Daniel R. Cohn - Cambridge MA, US
John B. Heywood - Newton MA, US

Massachusetts Institute of Technology - Cambirdge MA

F02B 77/04

123198A

Fuel management system for enhanced operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder. It is preferred that the direct injection occur after the inlet valve is closed. It is also preferred that stoichiometric operation with a three way catalyst be used to minimize emissions. In addition, it is also preferred that the anti-knock agents have a heat of vaporization per unit of combustion energy that is at least three times that of gasoline.

7290522, Nov 6, 2007

Jan 12, 2004

10/755541

John Heywood - Newton MA, US
Leslie Bromberg - Sharon MA, US
Daniel Cohn - Chestnut Hill MA, US

Masschusetts Institute of Technology - Cambridge MA

F02B 3/00

123300, 60602, 123295, 123 27 R

High compression ratio, homogeneous charge compression ignition engines. In one aspect the engine is dual mode utilizing spark ignition at high load levels including the addition of hydrogen or a hydrogen/carbon monoxide mixture. In another aspect, the engine operates on a high cetane fuel with the addition of hydrogen or a hydrogen/carbon monoxide mixture at low-to-mid-load levels.

7314033, Jan 1, 2008

Nov 18, 2004

10/991774

Daniel R. Cohn - Cambridge MA, US
Leslie Bromberg - Sharon MA, US
John B. Heywood - Newton MA, US

Massachusetts Institute of Technology - Cambridge MA

F02D 43/00
F02D 41/14
F02M 25/14

123198A, 123435, 12340629

Fuel management system for efficient operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder of the engine. A fuel management microprocessor system controls injection of the anti-knock agent so as to control knock and minimize that amount of the anti-knock agent that is used in a drive cycle. It is preferred that the anti-knock agent is ethanol. The use of ethanol can be further minimized by injection in a non-uniform manner within a cylinder. The ethanol injection suppresses knock so that higher compression ratio and/or engine downsizing from increased turbocharging or supercharging can be used to increase the efficiency of the engine.

7444987, Nov 4, 2008

Sep 19, 2005

11/229755

Daniel R. Cohn - Chesnut Hill MA, US
Leslie Bromberg - Sharon MA, US
John B. Heywood - Newton MA, US

Massachusetts Institute of Technology - Cambridge MA

F02B 7/00

123431, 123198 A, 123 1 A

Fuel management system for efficient operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder of the engine. A fuel management microprocessor system controls injection of the anti-knock agent so as to control knock and minimize that amount of the anti-knock agent that is used in a drive cycle. It is preferred that the anti-knock agent is ethanol. The use of ethanol can be further minimized by injection in a non-uniform manner within a cylinder. The ethanol injection suppresses knock so that higher compression ratio and/or engine downsizing from increased turbocharging or supercharging can be used to increase the efficiency of the engine.

7637250, Dec 29, 2009

Mar 8, 2007

11/683564

Leslie Bromberg - Sharon MA, US
Paul Blumberg - Southfield MI, US
Daniel R. Cohn - Cambridge MA, US
John Heywood - Newton MA, US

Ethanol Boosting Systems, LLC - Cambridge MA

F02D 41/12

123431, 1231794, 123198 DB, 12340631, 12340632

Fuel management system for operation of a spark ignition gasoline engine. The system includes a gasoline engine powering the vehicle and a source of gasoline for introduction into the engine. A source of an anti-knock fuel such as ethanol is provided. An injector directly injects the anti-knock fuel into a cylinder of the engine and the control system shuts down the engine by stopping gasoline and anti-knock agent flow into the engine during vehicle deceleration and idling and restarts the engine upon driver demand. Direct ethanol injection and engine shutdown results in efficiencies similar to those of full hybrid vehicles.

7640915, Jan 5, 2010

Oct 12, 2007

11/871384

Daniel R. Cohn - Cambridge MA, US
Leslie Bromberg - Sharon MA, US
John B. Heywood - Newton MA, US

Massachusetts Institute of Technology - Cambridge MA

F02D 43/00
F02D 41/14
F02M 25/14

123435, 123198 A

Fuel management system for efficient operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder of the engine. A fuel management microprocessor system controls injection of the anti-knock agent so as to control knock and minimize that amount of the anti-knock agent that is used in a drive cycle. It is preferred that the anti-knock agent is ethanol. The use of ethanol can be further minimized by injection in a non-uniform manner within a cylinder. The ethanol injection suppresses knock so that higher compression ratio and/or engine downsizing from increased turbocharging or supercharging can be used to increase the efficiency of the engine.

7703446, Apr 27, 2010

Jul 24, 2007

11/782050

Leslie Bromberg - Sharon MA, US
Paul Blumberg - Southfield MI, US
Daniel R. Cohn - Cambridge MA, US
John Heywood - Newtonville MA, US

Ethanol Boosting Systems LLC - Cambridge MA

F02B 13/00
F02M 25/14

123575

Engine management system for operation of a direct injection spark ignition gasoline engine. The system includes a gasoline engine, a source of gasoline and a source of an anti-knock agent. Gasoline and anti-knock agent are introduced into a proportioning valve that delivers a selected mixture of gasoline/anti-knock agent to a high pressure pump. At least one injector receives the selected mixture from the high pressure pump and delivers the mixture into a cylinder of the engine. The engine management system provides a rapidly variable mixture of directly injected anti-knock agent and gasoline which prevents knock as the engine torque increases.