Fuel Assisted Idle Speed Control for Lean Burn Gasoline Engines Ford Motor Company

Format:

Conference/Event

Author/Creator:

Kerns, James, author.

Conference Name:

Small Engine Technology Conference & Exposition (2006-11-13 : San Antonio, Texas, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2006

Summary:

Reduced engine idle speed reduces fuel consumption but requires active idle speed control (ISC) to avoid stalls due to accessory load disturbances. For gasoline engines, spark advance is used in conjunction with air flow for the idle speed control. However, for spark control to be effective the nominal spark timing has to be retarded from the optimal timing to allow spark to increase torque. This offsets the fuel consumption benefit from lower speeds. During lean homogenous operating modes, Fuel Assisted ISC (FA-ISC) uses fuel to increase torque (similar to diesel and gasoline stratified charge) eliminating the need for the retarded nominal spark. The engine then operates close to optimal spark and the lean air fuel limit for optimal fuel economy

Notes:

Vendor supplied data

Publisher Number:

2006-32-0009

Access Restriction:

Restricted for use by site license