EGR valve assembly, engine with EGR valve assembly and control method of engine
A technology of EGR valve and control method, which is applied to engine components, machines/engines, mechanical equipment, etc., can solve problems such as difficulty in starting the EGR valve, and achieve the effects of shortening deicing time, uniform heating, and improved efficiency
Active Publication Date: 2022-04-15
WEICHAI POWER CO LTD
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Problems solved by technology
[0005] The purpose of the present invention is to at least solve the problem of difficulty in starting the EGR valve at low temperature in the prior art
Method used
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[0050] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
[0051] It should be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may also be meant to include the plural forms unless the context clearly dictates otherwise. The terms "comprising", "comprising", "containing" and "having" are inclusive and thus indicate the presence of stated...
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The invention belongs to the technical field of vehicles, and particularly relates to an EGR valve assembly, an engine with the EGR valve assembly and a control method of the engine, the EGR valve assembly comprises a shell, an EGR valve, a heating piece and a heat preservation medium, a containing cavity is formed in the shell, at least part of the EGR valve is arranged in the containing cavity, the heating piece is arranged in the containing cavity, and the heat preservation medium is arranged in the containing cavity. According to the EGR valve assembly disclosed by the embodiment of the invention, the EGR valve is integrated with the heating piece for deicing and the heat preservation medium, so that deicing can be completed without detaching the EGR valve by a user, the deicing time is shortened, and the working efficiency is ensured. The heating element heats the heat preservation medium, the heat preservation medium heats the EGR valve, heating is more uniform, it is not needed to arrange more heating elements, the heating temperature, frequency and duration can be accurately controlled by controlling the heating element, limitation of engine cooling water is avoided, rapid deicing is achieved, the deicing efficiency is improved, and no pipeline needs to be additionally arranged on an engine.
Description
technical field [0001] The invention belongs to the technical field of vehicles, and in particular relates to an EGR valve assembly, an engine with the EGR valve assembly and a control method for the engine. Background technique [0002] This section provides background information related to the present disclosure only and is not necessarily prior art. [0003] The EGR (Exhaust Gas Recirculation) valve guides the exhaust gas exhausted by engine combustion to the intake manifold to participate in combustion to reduce the temperature of the combustion chamber, improve the working efficiency of the engine, improve the combustion environment, and reduce the burden on the engine to effectively reduce the emission of NO compounds , Reduce knocking and prolong the service life of each component. [0004] In low temperature conditions, icing of the EGR valve will cause difficulty in starting, which in turn will affect the emission performance of the engine. There are two solution...
Claims
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IPC IPC(8): F02M26/73F02M26/72F02M26/45F02M26/48
CPCF02M26/73F02M26/72F02M26/45F02M26/48Y02T10/40
Inventor 甘雨郭雪飞王凝露单亚飞庄绪强
Owner WEICHAI POWER CO LTD