Engine control method and device, medium, equipment and vehicle

A control method and engine technology, applied in the direction of engine control, mechanical equipment, machine/engine, etc., can solve the problems of slow engine torque growth, affecting vehicle acceleration performance, unable to meet user vehicle power performance requirements, etc., to reduce energy consumption and The effect of exhaust emissions

Active Publication Date: 2022-07-29
GREAT WALL MOTOR CO LTD
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  • Claims
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Problems solved by technology

In related technologies, in order to achieve the goal of energy saving and emission reduction, the intake air volume of the engine can be controlled according to the target EGR rate, but this will cause the torque of the engine to increase slowly during the acceleration process, which will affect the acceleration performance of the vehicle and cannot satisfy the user's requirements. Vehicle power performance requirements

Method used

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  • Engine control method and device, medium, equipment and vehicle
  • Engine control method and device, medium, equipment and vehicle
  • Engine control method and device, medium, equipment and vehicle

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Embodiment Construction

[0043] The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, but not to limit the present disclosure.

[0044] In the following description, words such as "first" and "second" are only used for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying order.

[0045] First, the application scenarios of the present disclosure will be described. The present disclosure may be applied in an engine control scenario for a vehicle having an exhaust gas recirculation system. figure 1 It is a schematic structural diagram of an engine system with an exhaust gas recirculation system provided by an embodiment of the present disclosure, such as figure 1 As shown, the engine...

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Abstract

The invention relates to an acquisition engine control method and device, a medium, equipment and a vehicle. The method comprises the steps that the target air flow and the target EGR rate of an engine are determined according to the required torque of the vehicle and the rotating speed of the engine; determining a first target opening degree of a first valve corresponding to the target air flow, and determining a second target opening degree of a second valve corresponding to the target EGR rate and a third target opening degree of the first valve; the first valve is controlled according to the first target opening degree, so that the air flow entering an engine is increased; and under the condition that the current air flow of the engine is larger than or equal to the target air flow, the first valve is controlled according to the third target opening degree, and the second valve is controlled according to the second target opening degree, so that the actual EGR rate of the engine is increased. In this way, the power requirement of the vehicle can be met firstly, and then the requirement of the target EGR rate is met step by step.

Description

technical field [0001] The present disclosure relates to the field of vehicle control, and in particular, to an engine control method, device, medium, device, and vehicle. Background technique [0002] With the rapid development of the automobile and internal combustion engine industries, energy demand and environmental protection issues also follow. Therefore, energy saving and emission reduction have become the two major themes of the development of the internal combustion engine industry. In this context, an Exhaust Gas Recirculation (EGR, Exhaust Gas Recirculation) system can be deployed in a vehicle to reduce vehicle exhaust emissions and save energy. Exhaust gas recirculation means that part of the exhaust gas discharged from the engine is returned to the intake pipe of the engine, mixed with fresh air and then re-entered into the cylinder. The exhaust gas contains a large amount of polyatomic gases such as CO2. Absorbs a lot of heat to reduce the maximum combustion t...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): F02D41/00F02D41/24
CPCF02D41/0077F02D41/0052F02D41/0007F02D41/2451Y02T10/40
Inventor崔亚彬
OwnerGREAT WALL MOTOR CO LTD