Patent Number: 7,762,243

Title: Single nozzle direct injection system for rapidly variable gasoline/anti-knock agent mixtures

Abstract: 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.

Inventors: Bromberg; Leslie (Sharon, MA), Blumberg; Paul (Southfield, MI), Cohn; Daniel R. (Cambridge, MA), Heywood; John (Newtonville, MA)

Assignee: Ethanol Boosting Systems, LLC

International Classification: F02B 13/00 (20060101); F02M 25/14 (20060101); F02D 41/30 (20060101); F02B 1/08 (20060101)

Expiration Date: 7/27/12018