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A transmission control method and control system for a vehicle

A gearbox control and gearbox technology, applied in the field of vehicle gearbox control methods and control systems, can solve problems such as increased fuel consumption and emissions, bad driving experience, and impact on vehicle quality, so as to reduce engine fuel consumption and manpower Material resources, the effect of solving the vibration of the whole vehicle

Active Publication Date: 2022-03-15
ZHEJIANG GEELY HOLDING (GROUP) CO LTD +1
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the NVH level of the three-cylinder engine is inherently insufficient, and the vibration caused by unbalanced engine operation is also particularly obvious. The moment before the driver taxis and brakes to stop, the three-cylinder unbalanced vibration of the three-cylinder engine will be transmitted to the car, giving The driver brings a very bad driving experience
[0004] These vibrations will be transmitted to the car during adaptive cruise coasting, before braking and when standing still, affecting the quality of the vehicle and increasing fuel consumption and emissions

Method used

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  • A transmission control method and control system for a vehicle
  • A transmission control method and control system for a vehicle
  • A transmission control method and control system for a vehicle

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Embodiment Construction

[0032] figure 1 is a flow chart of a transmission control method for a vehicle according to an embodiment of the present invention. Such as figure 1 As shown, the present invention provides a transmission control method for a vehicle, and the vehicle includes a three-cylinder engine. Such as figure 1 As shown, in one embodiment, the gearbox control method includes:

[0033] Step S10: When the vehicle is in the adaptive cruise state, it is judged whether the vehicle is in the following low-speed coasting state or the automatic following stationary state, if so, enter step S20, otherwise, the neutral idle speed control is not activated.

[0034] Step S20: Control the transmission of the vehicle to enter neutral idle control (NIC), and the clutch between the transmission and the three-cylinder engine is disconnected during neutral idle control.

[0035] This embodiment controls the vehicle with the three-cylinder engine in the low-speed coasting state of following the car und...

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Abstract

The invention provides a vehicle gearbox control method and a control system, belonging to the field of vehicle control. The gearbox control method includes: when the vehicle is in the adaptive cruise state, judging whether the vehicle is in the low-speed coasting state of following the car or in the stationary state of automatically following the car, and if so, controlling the gearbox of the vehicle to enter neutral idle speed control, the clutch between the gearbox and the three-cylinder engine is disconnected during the neutral idle speed control. The gearbox control method and control system of the present invention can effectively improve the shaking of the three-cylinder engine while maintaining driving dynamics, economy and responsiveness.

Description

technical field [0001] The invention belongs to the field of vehicle control, in particular to a vehicle gearbox control method and control system. Background technique [0002] As the three-cylinder engine becomes more and more common, the three-cylinder engine has many inherent advantages, which can improve the fuel economy of the engine, reduce carbon dioxide emissions, and reduce engine emissions. At the same time, it can further reduce the size of the engine and enhance the torque and performance. It can be said that the practicality of the small three-cylinder engine is becoming more and more popular in the context of national energy conservation and emission reduction. [0003] However, the NVH level of the three-cylinder engine is inherently insufficient, and the vibration caused by unbalanced engine operation is also particularly obvious. The moment before the driver taxis and brakes to stop, the three-cylinder unbalanced vibration of the three-cylinder engine will ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H59/50F16H61/00
CPCF16H59/50F16H61/00
Inventor 徐冠铭汤国杰
Owner ZHEJIANG GEELY HOLDING (GROUP) CO LTD
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