Analysis on Idle Speed Stability in Port Fuel Injection Engines Nissan Motor Company, Limited

Format:

Conference/Event

Author/Creator:

Yamaguchi, Hiroshi, author.

Conference Name:

Passenger Car Meeting and Exposition (1986-09-22 : Dearborn, Maryland, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1986

Summary:

It has been reported by several researchers that the L-jetronic fuel injection system offers better idle speed stability than the D-jetronic one in port fuel injection engines. However, the volume between the throttle valve and the intake valves in the L-jetronic system acts as a first order lag element in the system and causes air-fuel ratio fluctuation which, in turn, induces idle speed hunting under certain conditions. This study employs computer simulation to determine the influence of three parameters on idle speed stability: (1) flywheel inertia, (2) intake manifold volume, and (3) air-fuel ratio calibration. It also explores means of improving idle speed stability by controlling the air-fuel ratio and ignition timing. The use of actual engine torque data to estimate the generated torque from the amount of air and fuel in each combustion cycle was the unique feature of this study

Notes:

Vendor supplied data

Publisher Number:

861389

Access Restriction:

Restricted for use by site license