Advanced Canister Purge Algorithm with a Virtual [HC] sensor Delphi Automotive Systems

Format:

Book

Conference/Event

Author/Creator:

Grieve, M. James, author.

Conference Name:

SAE 2000 World Congress (2000-03-06 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2000

Summary:

Both evaporative emissions and tailpipe emissions have been reduced by more than 90% from uncontrolled levels in state-of-the-art. However, now that the objective is to reach near-zero emission levels, the need for aggressive purging of the canister and fuel tank and the need for extremely precise control of engine Air/Fuel ratio (A/F) come into conflict. On-board diagnostics and the wide variation in operating conditions and fuel properties in the "real world" add to the challenge of resolving these conflicting requirements.An advanced canister purge algorithm has been developed which substantially eliminates the effect of canister purge on A/F control by estimating and compensating for the fuel and air introduced by the purge system.This paper describes the objectives and function of this algorithm and the validation of its performance. It discusses the value of a "systems solution" - matching software to a robust set of evaporative system components rather than using additional sensors and actuators for new fuel control and diagnostic functions

Notes:

Vendor supplied data

Publisher Number:

2000-01-0557

Access Restriction:

Restricted for use by site license