JPH0231951U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the overall configuration of an automatic transmission 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 speed change routine in the control program, FIG.
CLLE] Flowchart showing the routine, 1st
Figure 0 shows the NEAI in the shift routine in Figure 8.
A flowchart for explaining the DL routine,
FIG. 11 is a flowchart showing the accelerator pseudo signal voltage creation routine in the speed change process shown in FIG. 8, and FIG. 12 is a flowchart for explaining the ACiN routine in the accelerator pseudo signal voltage creation routine shown in FIG. 11. FIG. 13 is a flowchart for explaining the NEHOLD routine in the shift routine in FIG. 8, FIG. 14 is a flowchart for explaining the clutch-on signal processing routine, and FIG. 15 is for explaining an example of the shift map. 3 is a diagram corresponding to FIG. 11...Engine, 15...Friction clutch, 1
7...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, 79... Vehicle speed sensor, 85... Accelerator load sensor, 95... Microcomputer, 9
7...Storage device.

Claims (1)

[Scope of Claim for Utility Model Registration] A friction clutch connected to the engine, an air actuator for the clutch that operates the friction clutch, an engine rotation sensor that detects the rotation speed of the engine, and a gear connected to the friction clutch. a rotation speed sensor that detects the rotation speed of the clutch, a clutch stroke sensor that detects the stroke amount of the clutch, an accelerator load sensor that outputs the amount of depression of the accelerator pedal, and an engine rotation sensor that outputs the amount of depression of the accelerator pedal. The rotational speed, clutch rotational speed, clutch stroke amount, and accelerator depression amount from the accelerator load sensor are inputted from the clutch rotational speed sensor and clutch stroke sensor, and the duty ratio for the clutch air actuator is set. In addition, as a gear map,
At each gear switching boundary, a region in which the previously selected gear is maintained is set in a range that corresponds to a state in which the amount of accelerator depression relative to the vehicle speed is almost eliminated and acceleration or steady driving is canceled. If the control unit determines that the amount of accelerator depression changes in a decreasing direction and this change occurs suddenly, the control unit changes the gear to the previously selected gear. An automatic transmission for a vehicle, characterized in that the gear position change from the gear map is canceled in order to fix the position.