Catalyst fast light-off method for vehicle, engine assembly and vehicle
A technology of engines and catalytic converters, which is applied in the direction of machines/engines, engine control, mechanical equipment, etc., can solve the problems of increasing the heat energy reaching the catalytic converter, limiting the influence of combustion stability, increasing high-temperature exhaust gas, etc.
Active Publication Date: 2021-08-20
GREAT WALL MOTOR CO LTD
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Problems solved by technology
In the related technology, the high-temperature exhaust gas is increased by delaying the ignition timing and increasing the idle speed of the engine, thereby increasing the heat energy reaching the catalytic converter. However, the delay of the ignition timing is limited by the combustion stability. It will be limited by the impact of safety, noise, etc.
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[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0026] Refer below Figure 1-Figure 2 A catalyst quick light-off method for a vehicle according to an embodiment of the present invention will be described.
[0027] The vehicle according to the present invention is provided with a generator and the engine can selectively provide power for the generator. The catalytic converter rapid ignition method includes at least the following steps: a start-up phase, starting the engine so that the speed of the engine reaches a preset speed; a fast idle phase , the speed of the engine is stabilized...
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The invention discloses a method for rapid ignition of a catalytic converter for a vehicle, an engine assembly and a vehicle. According to the method for rapid ignition of a catalytic converter for a vehicle of the present invention, the engine of the vehicle is provided with a generator and the The engine can optionally provide power for the generator, and the method for fast ignition of the catalytic converter at least includes the following steps: in the starting stage, starting the engine so that the speed of the engine reaches a preset speed; in the fast idling stage, turning the The rotational speed of the engine is stabilized at a preset rotational speed for a period of time, and at the same time, the engine is controlled to provide power for the generator. The rapid ignition method of the catalytic converter according to the present invention can accelerate the speed of the catalytic converter to reach the reaction temperature, reduce the emission pollutants when the engine is cold started, and make the vehicle more environmentally friendly.
Description
technical field [0001] The invention relates to the field of automobiles, in particular to a rapid ignition method for a catalytic converter used in a vehicle, an engine assembly and a vehicle. Background technique [0002] With the implementation of the National VI standard, the emission regulations have become more and more stringent. In order to cope with the new emission regulations, it is necessary to let the catalytic converter light up quickly. The way to achieve rapid start-up of the catalyst is to increase the temperature or heat of the exhaust gas reaching the catalyst, so that the catalyst can reach the reaction temperature in a short time, thereby reducing the emission of pollutants during cold start. In the related art, the high-temperature exhaust gas is increased by delaying the ignition timing and increasing the idle speed of the engine, thereby increasing the heat energy reaching the catalytic converter. However, the delay of the ignition timing is limited b...
Claims
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IPC IPC(8): F02D41/02
CPCF02D41/0255F02D2041/026
Inventor 张阳苏博浩角田宏屈伟王勇杰吴超王一望常进才杨旭飞陈李
Owner GREAT WALL MOTOR CO LTD