System and method for controlling engine output to suppress slip

Details System and method for controlling engine output to suppress slip System and method for controlling engine output to suppress slip

1990-08-30

1992-06-23

Chin, Gary

Boots, shoes, and leggings

180197, 123336, B60K 4120

Patent

active

051249227

ABSTRACT:
A system and method for controlling engine output applicable to an automotive vehicle are disclosed in which when an engine output control condition is not satisfied and a predetermined follow-up control release condition is not satisfied, a second throttle valve additionally installed in series with a first throttle valve associated with an accelerator is controlled so as to follow up the angular displacement (opening angle) of the first throttle valve. Therefore, a sticking of the second throttle valve due to adhering or freezing of rust or foreign matters thereonto can be prevented. In addition, the follow-up control of the second throttle valve permits the second throttle valve to be displaced in a low opening angle required for the engine output reduction control in a short period of time. Thus, a responsive characteristic of reducing a slip rate on drive wheels can be improved. When the follow-up throttle valve is returned toward its fully open position. Thus, a durability of a second throttle valve actuator can be enhanced. The second throttle valve, therefore, does not provide an intake air resistance and/or turbulence for the engine intake air.

REFERENCES:
patent: 4637487 (1987-01-01), Nakamura et al.
patent: 4685547 (1987-08-01), Ohashi et al.
patent: 4722411 (1988-02-01), Ohashi et al.
patent: 4736728 (1988-04-01), Takahashi et al.
patent: 4845622 (1989-07-01), Suzuki et al.
patent: 4951208 (1990-08-01), Etoh

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