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Control method and device of engine rotating speed

A technology of engine speed and control method, applied in the direction of transmission control, mechanical equipment, components with teeth, etc., can solve problems such as mismatch between gear position and speed, long shifting operation time, and uneven shifting

Inactive Publication Date: 2018-12-14
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shifting operation time of heavy-duty commercial vehicles is longer than that of passenger vehicles. When shifting gears, the engine speed drops more after the clutch is stepped on. When the clutch is released after shifting, the gear position does not match the speed, resulting in uneven shifting.

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  • Control method and device of engine rotating speed
  • Control method and device of engine rotating speed
  • Control method and device of engine rotating speed

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Embodiment Construction

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0034] figure 1 It is a flow chart of an engine speed control method provided by an embodiment of the present invention. This embodiment is applicable to controlling the engine speed when shifting gears in a manual transmission. The control method includes:

[0035] Step 110, acquiring the current gear of the vehicle.

[0036] Among them, the current gear of the vehicle can be obtained according to the gear sensor installed in the gearbox, or according to the vehicle's operating information (such as vehicle speed...

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Abstract

The embodiment of the invention discloses a control method and device of engine rotating speed. The control method comprises the steps that the current gear of a vehicle is obtained; a shift intentionof a user is analyzed according to the current gear; the required gear of the vehicle and required rotating speed which corresponds to the required gear are calculated according to the shift intention; and the engine rotating speed is controlled to maintain in the required rotating speed within preset time. According to the technical scheme, the shift intention of the user is judged through the current gear of the vehicle, then the required gear of the vehicle and required rotating speed which corresponds to the required gear are calculated, the engine rotating speed is controlled to maintainin the required rotating speed within the preset time during shifting, the problem that the shifting of a manual speed changing box is not smoothly caused by mismatched engine rotating speed after shifting is solved, and the smoothness of the shifting is improved.

Description

technical field [0001] Embodiments of the present invention relate to engine control technologies, and in particular, to a method and device for controlling engine speed. Background technique [0002] There are three types of transmissions in cars: manual transmission, automatic transmission and continuously variable transmission. A car with a manual gearbox transmits power completely through the meshing of the gears and the ratio of the transmission ratio, and its output torque is large. Due to this feature, many large cars and buses have always used the manual transmission method. [0003] At present, the vast majority of domestic commercial vehicles use mechanical gearboxes, which require the driver to manually shift gears. However, the shifting operation time of heavy-duty commercial vehicles is longer than that of passenger vehicles. When shifting gears, the engine speed drops more after the clutch is stepped on. When the clutch is released after shifting, the gear pos...

Claims

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Application Information

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IPC IPC(8): F16H61/04F16H61/02
CPCF16H61/0204F16H61/04
Inventor 陈玉杰金钊曹原张成国
Owner WEICHAI POWER CO LTD
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