Control device for power transmission device for vehicle

Abstract

The invention relates to a control device for a power transmission device for a vehicle having a clutch (3) between an engine (1) and a transmission (4), the control device preventing variation in torque of the engine and shift shock when the mode of an engine control returns from engine control for shifting to accelerator pedal following control for normal travel. Timer means (62) is provided ina clutch control device (6) for disengaging the clutch (3) in shift operation and engaging it when the shift is completed. The timer means (62) controls the time point at which control for engaging the clutch is started, and the control is based on conditions etc. of the engine. Because increment conditions of the amount of clutch engagement varies to change conditions of variation of the speed of the engine, conditions of the engine when engine control in shift operation returns from engine control for shift operation to accelerator pedal following control for normal travel can be set to conditions where variation in torque of the engine due to switchover between the control modes does not occur.

Description

technical field [0001] The present invention relates to a control device for a vehicle power transmission device having a clutch between an engine and a transmission, the control device for the vehicle power transmission device having an engine for performing accelerator pedal follow-up control with an accelerator pedal depression amount as a basic parameter A control device and a clutch control device for controlling the connection amount of the clutch. Background technique [0002] As a development trend of vehicles in recent years, for the purpose of easy steering, vehicle power transmission systems that automate shifting operations, clutch operations, and the like have become popular. Among such vehicle power transmission devices, there is a power transmission device in which a diesel engine is mounted, a parallel shaft gear mechanism type transmission is used as a transmission, an automatic clutch is arranged, and a hydraulic force is installed between the engine and th...

AI Technical Summary

Problems solved by technology

Thus, in Figure 5 In the action during shifting shown in , when the difference between the engine speed and the speed of the transmission input shaft reaches a specified value (B), that is, when the control mode of the engine control device is restored from engine control when shifting to accelerator pedal follow-up During the control, sometimes the difference in the upper limit value of the fuel injection amount exerts an influence and produces a large difference in the fuel injection amount supplied to the engine.

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