An Emission Comparison Between a Carburetor and an Electronic Fuel Injection System for Utility Engines Walbro Engine Management Corporation

Format:

Conference/Event

Author/Creator:

Swanson, Mark, author.

Conference Name:

International Off-Highway & Powerplant Congress & Exposition (1991-09-09 : Milwaukee, Wisconsin, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1991

Summary:

An Electronic Fuel Injection system has been developed for utility engines which will reduce exhaust emissions and give greater control of the Air/Fuel ratio compared to the standard carburetor. Standard automotive components were used when possible.The Electronic Fuel Injection system is a port fuel injected design using a bottom feed fuel injector which sprays directly on the intake valve. The engine speed/position, throttle position, air intake temperature and cylinder head temperature are measured and fed into the Electronic Control Unit. Look-up tables are used to determine the injection duration time during starting, warm-up, acceleration and normal operating conditions. Normal operating conditions are conditions the engine would encounter during actual use such as idle to governored rpm, no-load to full load, ambient temperature ranges from -40°C to 55°C, and any combination of the above. Corrections for engine overheating are also made, but not for a restricted air filter element. An electric fuel pump and mechanical pressure regulator were used to supply and control the fuel pressure to the fuel injector

Notes:

Vendor supplied data

Publisher Number:

911806

Access Restriction:

Restricted for use by site license