A Study of Vehicle Equipped with Non-Throttling S.I. Engine with Early Intake Valve Closing Mechanism Honda R&D Company, Limited

Format:

Conference/Event

Author/Creator:

Urata, Yasuhiro, author.

Conference Name:

International Congress & Exposition (1993-03-01 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1993

Summary:

To enable non-throttling operation of gasoline Place of publication not identified engine, we have manufactured engines equipped with a newly developed Hydraulic Variable-valve Train (HVT), which can vary its intake-valve closing-timing freely. The air-intake control ability of HVT engine is equivalent to conventional throttling engines. Combustion becomes unstable, however, under non-throttling operation at idling. For the countermeasure, newly designed combustion chamber has been developed. The reduction of pumping loss by the HVT depends on engine speed rather than load, and amounts to about 80 % maximum.A conventional engine-management system is not applicable for non-throttling operation. Therefore, new management system has been developed for load control. The vehicle equipped with the HVT engine proved an equivalent driveability to the vehicle with conventional engine, particularly, it satisfied EPA emission standards in the U.S. and proved about 7% improvement of fuel consumption in EPA Urban Dynamometer Driving Schedule

Notes:

Vendor supplied data

Publisher Number:

930820

Access Restriction:

Restricted for use by site license