JPS6229940U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram to clearly show the configuration of this invention, FIG. 2 is a schematic diagram explaining the mechanical configuration of an embodiment of this invention, and FIG. 3 is a block diagram of this embodiment. 4 and 5 are flowcharts illustrating the shift-up control and shift-down activation operations performed within the control unit. FIG. 6 is a flowchart explaining the operation of the speed change control of the earlier application;
This figure is a flowchart explaining the operation of the shift-up control carried out in step 8 of FIG. 6, and FIG. 8 is a flowchart explaining the operation of the shift-down control carried out in step 9 of FIG. 6. Figures 9 and 10 are characteristic diagrams explaining the downshift region with respect to vehicle speed in the prior application. Figure 9 shows the case where the accelerator opening is an element, and Figure 10 shows the case where the accelerator opening is not an element. show. 30...Vehicle speed detection means, 31...Shift operation control means, 32A...Shift down activation determination means, 3
2B...Shift area setting means, 33...Engine rotation control means, 34...Clutch connection/disconnection means, 35...
...Gear shift means, 37...Engine, 38...
Mechanical clutch, 39...transmission,
40A... No-load detection means, 40B... Signal processing means, 41... Fuel injection pump, 42... Clutch, 43... Transmission, 49... Selector, 50... Accelerator opening sensor, 51... Selector position sensor, 52... Accelerator fully closed switch, 53... Governor control device, 54... Clutch stroke sensor, 55... Clutch actuator, 56... Main shaft rotation sensor, 57
... Counter shaft rotation sensor, 58 ... Shift position sensor, 59 ... Gear shift actuator, 60 ... Control unit, 61 ... Shift change control circuit, 62 ... Synchro determination circuit, 63 ... Engine control circuit, 64...Transmission control circuit, 65...Clutch intermittent control circuit, 66A...Shift down activation determination circuit,
66B...speed change area storage circuit.

Claims (1)

[Scope of utility model registration request] A clutch disconnection means for connecting and disconnecting a mechanical clutch, a gear shift means for shifting gears of a transmission, an engine rotation control means for controlling engine rotation, and a shift area in which an area for upshifting and downshifting is set according to driving conditions. a setting means; a shift-down start determining means for determining that a downshift operation is to be started when the vehicle speed becomes less than a predetermined value and the engine changes from a no-load state to a loaded state; In an automatic transmission system for a vehicle, the automatic transmission device includes a shift operation control means for increasing the engine speed based on a discrimination signal, disengaging the clutch, and shifting the gear to a predetermined gear position. An automatic transmission device for a vehicle, comprising a load detection means and a signal processing means for ignoring this no-load signal within a predetermined period of time after completion of a shift-up operation.