Method and system for the diagnosis of idling speed control syst

Details Method and system for the diagnosis of idling speed control syst Method and system for the diagnosis of idling speed control syst

1994-09-07

1998-02-10

Dombroske, George M.

Measuring and testing

Simulating operating condition

Marine

73116, 12333915, 36443103, 36443107, G01M 1500, F02D 4116, F02D 4122

Patent

active

057157260

ABSTRACT:
A system for the diagnosis of an idling speed control system has a first timer for measuring the time elapsed since entrance to a feedback control mode, an engine speed state detection unit for detecting whether the engine speed has fallen within a predetermined speed range, a second timer for measuring the time elapsed since the engine speed has been detected to fall within the speed range, and a normality determining unit for determining that the idling speed control system is in order, when the time measured by the first timer is within a first preset time and also the engine speed is detected to have fallen within the speed range and has remained in the speed range until the time measured by said second timer reaches a second preset time. By adopting such a diagnosis method that instead of instantaneously determining an idling speed control system as being in order even after the engine speed has once fallen within a speed range to which the engine is intended to be controlled, any subsequent potential disorder of the idling speed control system is also taken into consideration. This has made it possible to obtain high-reliability information, for example, even when information for the diagnosis of a fault of the idling speed is collected on board.

REFERENCES:
patent: 4794790 (1989-01-01), Margarit-Metaxa et al.
patent: 4960087 (1990-10-01), Junginger et al.
patent: 5005129 (1991-04-01), Abe et al.
patent: 5046467 (1991-09-01), Arnold et al.
patent: 5056483 (1991-10-01), Ohuchi
patent: 5080061 (1992-01-01), Nishimura
patent: 5117682 (1992-06-01), Amano
patent: 5124919 (1992-06-01), Kastelle
patent: 5333585 (1994-08-01), Kuroda
patent: 5375056 (1994-12-01), Nitschke et al.
patent: 5522363 (1996-06-01), Gotoh

Affiliated with

Also associated with

Rating

Method and system for the diagnosis of idling speed control syst does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and system for the diagnosis of idling speed control syst, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for the diagnosis of idling speed control syst will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2069440