Engine control apparatus

Motor vehicles – With means responsive to speed of vehicle for maintaining... – Including electrically actuated servomechanism

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Details

180179, 123361, B60K 3100

Patent

active

053949544

ABSTRACT:
An engine control apparatus includes a first intake valve and a second intake valve provided along an intake passage. First and second actuators drive the respective throttle valves. A setting unit sets a vehicle target speed in the constant cruising speed control mode. A first control unit controls the first actuator so as to maintain the actual vehicle speed at the target speed during the constant cruising speed control mode. An angle sensor detects the angle of the first throttle valve. A mode memory stores information about a plurality of control modes to be used in controlling the second throttle valve. A mode selector selects one of the control modes. Each control mode stored in the mode memory defines the target angle of the second throttle valve that depends on the angle of the first throttle valve. In accordance with the control mode selected by the mode selector, a second control unit controls the second actuator in such a way that the angle of the second throttle valve becomes the target angle determined in accordance with the first throttle valve angle. The control apparatus includes a regulator unit for regulating the first and/or the second control units, so as to control the first throttle valve in accordance with the control mode specified for the constant cruising speed control mode, while the constant speed control mode is in progress.

REFERENCES:
patent: 4951208 (1990-08-01), Etoh

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