JPH0332150U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a diagram corresponding to the claims of the present invention, Fig. 2 is a schematic diagram of the throttle opening control device for an on-vehicle internal combustion engine according to the present invention, and Fig. 3 is a specific configuration of the control unit in Fig. 2. 4 is a flow chart showing the operation of this control device, FIG. 5 is an explanatory diagram showing the throttle opening-accelerator opening characteristic in this control, and FIG. 6 is a diagram showing the relationship between engine load and fuel consumption rate. An explanatory diagram showing the relationship, FIG. 7 is an explanatory diagram showing the relationship between the fuel consumption rate and the control characteristics of the throttle opening,
FIG. 8 is an explanatory diagram showing the relationship between engine load and engine output corresponding to engine speed, and FIG. 9 is a characteristic diagram showing the relationship between engine load and throttle opening corresponding to engine speed. 1... Throttle opening detection means (throttle opening sensor 30), 2... Accelerator pedal depression amount detection means (accelerator opening sensor 20), 3... Engine operating state detection means (crank angle sensor 56, intake pressure sensor 34), 4... Throttle opening target value determining means (microcomputer 54), 5... Actuator driving means (microcomputer 54)
), 6...actuator (pulse motor 32),
50...control unit, 54...microcomputer.

Claims (1)

[Scope of Claim for Utility Model Registration] a. Throttle opening detection means for detecting the opening of a throttle valve provided in the engine intake passage, b. An accelerator pedal for detecting the amount of depression of the accelerator pedal arranged on the floor of the driver's seat of the vehicle. a depression amount detection means; c. an engine operating state detection means for detecting the operating state of the engine, including the engine speed and engine load, excluding the throttle opening and the accelerator pedal depression amount; d) the engine operating state detection means and the accelerator pedal. The output of the pedal depression amount detection means is input, and the accelerator pedal depression amount is adjusted according to the first characteristic set as appropriate until the engine load reaches a predetermined value at which the minimum fuel consumption rate set according to the engine speed is obtained. A target value for the throttle opening is determined accordingly, and when the predetermined value is reached, the engine load becomes the minimum in terms of fuel consumption rate relative to the engine speed over a predetermined range from the accelerator pedal depression amount at that time. When the accelerator pedal depression amount exceeds the predetermined range, the throttle opening including the full open position is determined according to the second characteristic set as appropriate. a throttle opening target value determining means for determining a target value of the throttle opening; An in-vehicle device characterized by comprising: an actuator drive means for driving an actuator connected to a throttle valve to eliminate deviation; and f an actuator that operates according to the output of the actuator drive means to move the throttle valve to a target position. Throttle opening control device for internal combustion engines.