Abstract: A direct fuel injection engine includes a fuel injector so positioned and oriented as to produce a fuel spray whose upper segment reaches the vicinity of a spark plug by a penetrating force of the fuel spray in a low engine speed light load operating region to achieve stratified charge combustion without the aid of tumble. A tumble control valve is operated to strengthen the tumble in a combustion chamber to achieve stratified charge combustion with the aid of tumble in an engine operating region higher in engine speed and/or engine load.
Abstract: An engine having an electronic engine control unit (ECU) is provided with a temperature management system for the ECU to prevent failure of the ECU through overheating. The temperature management system comprising means for monitoring or evaluating the temperature of the ECU to determine when the temperature of the ECU is approaching a predetermined limit and means for limiting further heating of the ECU to prevent the said limit from being exceeded.
Type:
Grant
Filed:
December 21, 2000
Date of Patent:
December 2, 2003
Assignees:
Cummins Engine Company, Ltd., Iveco (UK) Ltd., New Holland UK, Ltd.
Inventors:
John Jerl Purcell, Paul Sowerby, Edward P. Hodzen, Eric B. Andrews
Abstract: A high-pressure connection for a fuel injection system for internal combustion engines is proposed, which compensates for errors of alignment between the high-pressure line and the high-pressure connection without any bending stress being exerted on the high-pressure line.
Abstract: A closed loop fuel control system for controlling air/fuel ratio in response to exhaust gas oxygen signals includes a selective hysteresis function to prevent high frequency switching after a noise spike. This improves fuel control system noise protection without introducing permanent time delays.
Type:
Grant
Filed:
December 6, 1993
Date of Patent:
July 25, 1995
Assignee:
Ford Motor Company
Inventors:
Alexander Y. Gopp, Charles E. Southwell
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