ELECTRONIC THROTTLE CONTROL DEVICE OF INTERNAL-COMBUSTION ENGINE
First Claim
1. An electronic throttle control device of an internal-combustion engine that controls an engine output by computing a quantity of a throttle opening degree on the basis of a manipulation quantity of an accelerator pedal by a driver by means of a computation portion in an electronic control unit, and by controlling a throttle opening degree using a specific actuator on the basis of a computed command value of the throttle opening degree, wherein the electronic control unit includes:
- a judgment function portion that judges whether an engine control system and an engine driving condition are normal; and
plural kinds of pre-set characteristic conversion coefficient maps used to compute the command value of a target throttle opening degree from the manipulation quantity of the accelerator pedal, and wherein the command value of the target throttle opening degree is computed by selecting a specific map from the plural kinds of characteristic conversion coefficient maps depending on a judgment result of the judgment function portion.
1 Assignment
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Accused Products
Abstract
An electronic throttle control device of an internal-combustion engine includes an electronic control unit (ECU) having a judgment function portion that judges whether an engine control system and an engine driving condition are normal, and plural kinds of pre-set characteristic conversion coefficient maps used to compute a command value of a target throttle opening degree from a manipulation quantity of the accelerator pedal. The command value of the target throttle opening degree is computed using a specific map selected from the plural kinds of characteristic conversion coefficient maps depending on the judgment result of the judgment function portion.
25 Citations
7 Claims
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1. An electronic throttle control device of an internal-combustion engine that controls an engine output by computing a quantity of a throttle opening degree on the basis of a manipulation quantity of an accelerator pedal by a driver by means of a computation portion in an electronic control unit, and by controlling a throttle opening degree using a specific actuator on the basis of a computed command value of the throttle opening degree,
wherein the electronic control unit includes: -
a judgment function portion that judges whether an engine control system and an engine driving condition are normal; and
plural kinds of pre-set characteristic conversion coefficient maps used to compute the command value of a target throttle opening degree from the manipulation quantity of the accelerator pedal, and wherein the command value of the target throttle opening degree is computed by selecting a specific map from the plural kinds of characteristic conversion coefficient maps depending on a judgment result of the judgment function portion. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification