Electronically-controlled throttle system

Details Electronically-controlled throttle system Electronically-controlled throttle system

1997-08-06

1999-05-04

Marmor, Charles A.

Interrelated power delivery controls, including engine control

Transmission control

Engine controlled by transmission

477107, 123399, 701 54, 701 99, F02D 4110

Patent

active

058998306

ABSTRACT:
To suppress vehicle shock upon acceleration or deceleration, an upper guard value (KGUARD) for throttle rate of change is calculated based on parameters indicative of engine and torque transmission operating conditions. A target throttle sensor voltage change (DVVTA) is calculated based on accelerator depression and compared with the upper guard value KGUARD. If DVTTA>KGUARD, the final target throttle sensor voltage for the present cycle is determined by adding the upper guard value KGUARD to the previously calculated final throttle sensor voltage. If DVVTA.ltoreq.KGUARD, the target throttle sensor voltage VTTA is used as the final target throttle sensor voltage.

REFERENCES:
patent: 4461254 (1984-07-01), Pfalzgraf et al.
patent: 4691676 (1987-09-01), Kikuchi
patent: 4771849 (1988-09-01), Lieber et al.
patent: 4852008 (1989-07-01), Sager
patent: 4881428 (1989-11-01), Ishikawa et al.
patent: 5209207 (1993-05-01), Shitani et al.
patent: 5337239 (1994-08-01), Okuda

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