Combined system for assisting shifting of manual transmission

Details Combined system for assisting shifting of manual transmission Combined system for assisting shifting of manual transmission

1995-07-27

1996-12-10

Wright, Dirk

Interrelated power delivery controls, including engine control

Transmission control

Engine controlled by transmission

477111, B60K 4108

Patent

active

055825583

ABSTRACT:
A vehicle drive incorporates a speed control that assists an operator in shifting the transmission without requiring the clutch, or synchronization of engine speed. An operator is provided with a single switch that allows a prediction of the next shift direction, and also a request for torque elimination to begin a gear shift. The electronic control unit modifies the engine fueling to a predicted value to achieve a zero torque load, thus allowing the operator to move the transmission to neutral. The transmission is provided with a neutral switch that provides a positive signal to the electronic control unit of when the transmission is in neutral and when it is engaged. Once the electronic control receives the neutral signal, it begins to modify the engine speed to achieve the desired synchronization speed. The operator is thus able to engage the new gear. Once the new gear is engaged, control over the engine returns to the operator.

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