JPS6436632U - - Google Patents

Description

[Brief explanation of the drawing]

Figures 1 to 5 show an embodiment of this invention, Figure 1 is a schematic explanatory diagram of an internal combustion engine equipped with an idle rotation control device and its surroundings, Figure 2 is an enlarged view of the idle up actuator, and Figure 3 is a diagram showing the relationship between the negative pressure acting on the pressure chamber of the idle up actuator and the stroke of the idle up actuator, Figure 4 is a diagram showing the relationship between duty rate and engine speed, and Figure 5 is the duty rate. It is a figure showing the relationship between and negative pressure. In the figure, 2 is an internal combustion engine, 6 is an intake manifold, 8 is an intake passage, 10 is a carburetor, 12 is a throttle valve, 14 is an idle switch, 18 is an ignition coil, 20 is an idle up actuator, and 26 is a pressure chamber. , 32 is an actuation rod, 34 is a pressure introduction passage, 36 is an atmosphere introduction passage, 40 is a duty solenoid, 42 is a throttle part, 50 is a control part,
52 is an air conditioning switch, and 56 is a battery.

Claims (1)

[Scope of utility model registration request] In an idle rotation control device that includes an actuator that opens and closes a throttle valve to stabilize idling operation of an internal combustion engine, a pressure introduction passage that introduces intake pipe pressure into a pressure chamber of the actuator and an atmosphere introduction passage that introduces the atmosphere are connected to each other. An idler characterized in that the atmosphere introduction passage is provided with an electromagnetic mechanism for opening and closing the atmosphere introduction passage according to the load of the internal combustion engine and adjusting the intake pipe pressure acting on the pressure chamber of the actuator. Rotation control device.