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Torque Dynamic Control Method and Method for Restraining Engine Speed ​​Fluctuation

A technology of engine speed and dynamic control, applied in the direction of engine control, machine/engine, mechanical equipment, etc., can solve the problem of engine speed drop and high viscosity, and achieve the effect of reducing speed fluctuation, good effect and low manufacturing cost

Active Publication Date: 2021-04-06
UNITED AUTOMOTIVE ELECTRONICS SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But when the ambient temperature is low, because the gearbox oil temperature is also very low and the viscosity is high, even in the neutral state, there is still a large resistance between the gears. When the clutch is released after starting, the engine crankshaft output is suddenly Sudden resistance impact, causing the engine speed to drop more

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  • Torque Dynamic Control Method and Method for Restraining Engine Speed ​​Fluctuation
  • Torque Dynamic Control Method and Method for Restraining Engine Speed ​​Fluctuation
  • Torque Dynamic Control Method and Method for Restraining Engine Speed ​​Fluctuation

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Embodiment Construction

[0039] In order to make the purpose and features of the present invention more obvious and understandable, the specific implementation of the present invention will be further described below in conjunction with the accompanying drawings. However, the present invention can be implemented in different forms and should not be limited to the described embodiments. Moreover, in the case of no conflict, the embodiments in the present application and the features in the embodiments are allowed to be combined with each other. The advantages and features of the present invention will become clearer in conjunction with the following descriptions. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0040] During the driving process of a manual transmission vehicle, there is resistance in the combination process of the eng...

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Abstract

A torque dynamic control method. In a vehicle with manual gear shifting, after the clutch is combined, it takes a delay time for the engine output torque and external resistance to reach a balance. Firstly, the dynamic torque reserve of the engine is increased during the engagement process of the clutch; then, the dynamic torque reserve is consumed to resist the external resistance during the delay time. The advantage is that it can greatly reduce the engine speed fluctuation after starting, especially after starting at low temperature, and quickly balance the engine output torque and external resistance to improve vehicle performance.

Description

technical field [0001] The invention relates to the field of power system control of vehicles, in particular to a dynamic control method for torque and a method for suppressing engine speed fluctuations. Background technique [0002] The vehicle with manual transmission is still favored by a considerable number of consumers because of its convenient operation, low cost and simple maintenance. Considering factors such as safety and the resistance of the powertrain at the rear end of the engine, many manual transmission vehicles are set to start the engine after the clutch pedal is pressed even in the neutral state. After the engine starts, release the clutch to drive. [0003] During the process of releasing the clutch, the output end of the engine power will be connected to the input end of the gearbox at the rear end through the clutch. Under normal temperature, since the gearbox is in neutral state, the resistance is very small, which has almost no effect on the speed co...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D29/02
CPCF02D29/02F02D2250/18
Inventor 田良云程玉佼李嘉
Owner UNITED AUTOMOTIVE ELECTRONICS SYST