Device for detecting malfunction of fuel evaporative purge syste

Details Device for detecting malfunction of fuel evaporative purge syste Device for detecting malfunction of fuel evaporative purge syste

1989-08-18

1990-10-16

Miller, Carl Stuart

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

123198D, 123519, 123494, F02M 3900

Patent

active

049627449

ABSTRACT:
A device for detecting a malfunction of a fuel evaporative purge system comprises a temperature sensor for detecting a temperature inside a canister. During the absorbing and purging operations of the purge system, the device calculates changes in the temperature when absorbing and purging and compares the temperature changes with predetermined values denoting that the purge system is operating normally, and determines whether a malfunction has occurred in the purge system from the result of the comparison.

REFERENCES:
patent: 4116184 (1978-09-01), Tomita
patent: 4630581 (1986-12-01), Shibata
patent: 4641623 (1987-02-01), Hamburg
patent: 4809667 (1989-03-01), Oranishi
patent: 4817576 (1989-04-01), Abe
patent: 4846135 (1989-07-01), Tiphaine
patent: 4867126 (1989-09-01), Yonekawa
patent: 4872439 (1989-10-01), Sonada

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