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Engine control method and system and vehicle

A control method and control system technology, applied in the direction of engine control, machine/engine, mechanical equipment, etc., can solve problems such as unsatisfactory energy consumption, and achieve the effects of saving energy consumption, improving braking performance, and increasing gliding distance

Active Publication Date: 2018-11-13
GREAT WALL MOTOR CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

Fixed cylinder deactivation is simple to implement, but it cannot make the engine in the best fuel consumption zone under all operating conditions, resulting in relatively unsatisfactory energy consumption

Method used

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  • Engine control method and system and vehicle
  • Engine control method and system and vehicle
  • Engine control method and system and vehicle

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Embodiment Construction

[0031] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0032] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0033] figure 1 is a flowchart of an engine control method according to an embodiment of the present invention.

[0034] Before describing the control method of the engine according to the embodiment of the present invention, the engine will be described first. The engine in the embodiment of the present invention is a random cylinder deactivation engine. Specifically, the cylinder deactivation technology of the engine in the related art can only stop several cylinders fixedly. For example: only two cylinders can be stopped fixedly or three cylinders can be stopped fixedly or two cylinders can be symmetrically stopped. The implementation of fixed cylinder deactivation is relatively si...

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Abstract

The invention provides an engine control method and system and a vehicle. An engine comprises air inlet doors and air exhaust doors, the air inlet doors and the air exhaust doors correspond to cylinders and can be opened and closed independently. The engine control method comprises the steps of detecting the running mode of the vehicle, specifically, the running mode comprises a sliding mode and abraking mode; if the vehicle is in the sliding mode, controlling an oil atomizer to stop jetting oil and controlling the air inlet doors, the air exhaust doors and a throttle valve to be closed; andif the vehicle is in the braking mode, controlling the oil atomizer to stop jetting the oil, controlling the air inlet doors to be opened and controlling the air exhaust doors and the throttle valve to be closed. According to the method, when the vehicle is braked, the braking performance of the vehicle is improved, then running safety is ensured, the sliding distance of the vehicle is increased when the vehicle slides, and thus energy consumption is saved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an engine control method, system and vehicle. Background technique [0002] Environmental issues, energy crisis, stringent emission and fuel consumption regulations have brought severe challenges to the internal combustion engine industry. Reducing fuel consumption and reducing emissions is an urgent problem to be solved. [0003] For the purpose of reducing fuel consumption, in related technologies, engine cylinder deactivation technology appears, the purpose is to close some cylinders of the engine when working with a small load, thereby reducing pumping loss and reducing friction, so that the engine is in a more economical state when it is running at a small load. Fuel consumption range. However, the cylinder deactivation technology of the engine in the related art can only stop several cylinders fixedly. For example, two cylinders are fixedly stopped, three cylinders a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D29/02
CPCF02D29/02
Inventor 崔亚彬王帅赵伟博
Owner GREAT WALL MOTOR CO LTD
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