JPH0335823U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the overall configuration of an automatic transmission device according to an embodiment of the present invention, FIG. 2 is a conceptual diagram illustrating an example of a shift pattern in the device shown in FIG. 1, and FIG. Fig. 4 is a graph showing an example of a map for determining the duty rate, Fig. 5 is a diagram showing the shift map of PW and D ranges in the shift pattern of FIG. 6 is a flowchart showing the main routine of the control program in the block diagram shown in FIG. 1, FIG. 7 is a flowchart showing the starting routine of the control program, and FIG. A flowchart showing the starting routine in the control program, FIG.
CLLE] Flowchart showing the routine, 1st
Figure 0 is a diagram showing the relationship between the clutch stroke and the clutch operation time during that stroke, Figure 11 is a line diagram for explaining the fine movement process in the start process shown in Figure 8, and Figure 12 is a diagram showing the clutch stroke. FIG. 3 is a hysteresis characteristic diagram of 11...Engine, 15...Friction clutch, 17...
Gear type transmission, 21...fuel injection pump, 23...control rack, 25...electromagnetic actuator,
27... Engine rotation sensor, 33... Air cylinder, 35... Clutch stroke sensor, 41... Clutch rotation sensor, 53... Solenoid valve, 75... Gear position switch, 79... Vehicle speed sensor, 85... Accelerator load sensor, 95... Microcomputer, 97...
Storage device, 100A... Creep processing setting switch, 117A... Buzzer.

Amendment September 10, 1999 The scope of claims for utility model registration is amended as follows.

[Scope of Claim for Utility Model Registration] A friction clutch connected to the engine, an actuator for the friction clutch, an engine rotation sensor for detecting the rotation speed of the engine, a gear type transmission connected to the friction clutch, and a clutch stroke. A clutch stroke sensor that detects the amount, an accelerator sensor that detects the accelerator position,
A vehicle speed sensor detects changes in vehicle speed, a clutch rotation sensor detects the clutch rotation speed, and the engine rotation speed, clutch stroke amount, accelerator position, and gear position within the transmission selected at the fixed position are detected from the above sensors. The vehicle speed is input, and the duty ratio for the clutch actuator and the accelerator pseudo signal voltage for the fuel injection system are set, and the signal from the creep processing setting switch that is turned on when starting on a slope and repeating a slight start is set. The control unit is configured to input a signal from the creep processing setting switch and change the clutch stroke depending on whether the brake pedal is depressed or released. ,
When the pedal is released, the clutch is shifted from a half-clutch position to a tangential direction, and when the clutch rotational speed exceeds a set value, the clutch stroke is maintained to obtain a creep phenomenon that allows fine movement. Automatic transmission for vehicles.

Claims (1)

[Scope of Claim for Utility Model Registration] A friction clutch connected to the engine, an actuator for the friction clutch, an engine rotation sensor for detecting the rotation speed of the engine, a gear type transmission connected to the friction clutch, and a clutch stroke. A clutch stroke sensor that detects the amount, an accelerator sensor that detects the accelerator position,
A vehicle speed sensor detects changes in vehicle speed, and the engine speed, clutch stroke amount, accelerator position, and gear position and vehicle speed in the transmission selected for the fixed position are input from each of the above sensors, and the gear position and vehicle speed are input to the clutch actuator. The control unit is equipped with a control unit that sets the duty ratio and the accelerator pseudo signal voltage for the fuel injection device, and receives a signal from a creep processing setting switch that is turned on when repeated slight start when starting on a slope. When the signal from the above-mentioned creep processing setting switch is input, the clutch stroke is changed depending on whether the brake pedal is depressed or released.
The automatic transmission for a vehicle is characterized in that when the clutch is depressed, the target stroke of the clutch is set to a clutch stroke that shifts from a half-clutch to a tangential direction by a predetermined value to obtain a creep development that allows fine movement.