Method for heating after-treatment system of hybrid engine and engine controller
An engine controller and engine technology, applied to the electronic control of exhaust treatment devices, engine components, combustion engines, etc., can solve problems such as pollution, exhaust into the atmosphere, and exhaust pollutants that cannot be completely treated, so as to reduce pollution and improve conversion rate effect
Pending Publication Date: 2021-10-19
GUANGXI YUCHAI MASCH CO LTD
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Problems solved by technology
However, the exhaust gas treatment of the engine depends on the exhaust temperature of the post-treatment. Severe exhaust temperature fluctuations and low exhaust temperature (<200°C) will cause a large amount of exhaust pollutants to be discharged into the atmosphere without complete treatment, causing pollution
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Embodiment Construction
[0052] Embodiments of the present application provide a method for raising the temperature of an aftertreatment system of a hybrid engine and an engine controller, which are used to reduce exhaust temperature fluctuations of the aftertreatment system of the engine.
[0053] The embodiments of the present application will clearly and completely describe the technical solutions in the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0054] see figure 1 , the embodiment of the present application provides an embodiment of the method for raising the temperature of the aftertreatment system of the hybrid engine, incl...
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The embodiment of the invention discloses a method for heating an after-treatment system of a hybrid engine and an engine controller, and aims to reduce exhaust temperature fluctuation of an engine after-treatment system. The method in the embodiment of the invention comprises the following steps that the engine controller acquires a heat management request of the after-treatment system, wherein the heat management request is sent to the engine controller when the temperature of the after-treatment system is lower than a preset working temperature; the engine controller controls a heating unit to control the after-treatment system to supply power and heat according to the heat management request; the engine controller determines that the after-treatment system enters an after-treatment active preheating mode according to the working state of the heating unit, wherein the after-treatment active preheating mode is used for enabling the engine controller to monitor the working temperature of the after-treatment system in real time; the engine controller judges whether the working temperature of the after-treatment system is larger than the preset working temperature or not; and if yes, the engine controller quits the active preheating mode and enters a normal working mode.
Description
technical field [0001] The embodiments of the present application relate to the field of engines, and in particular to a method for raising the temperature of an aftertreatment system of a hybrid engine and an engine controller. Background technique [0002] The hybrid vehicle has both engine drive and motor drive functions. When the hybrid vehicle is running, it will select a working mode according to the actual road conditions, vehicle speed requirements, battery status, etc., which can be single-engine drive mode or single-motor drive mode. mode, it can also be a hybrid drive mode. [0003] In the prior art, because the working mode of the hybrid engine is relatively harsh, and the engine is in a state of frequent start and stop, the aftertreatment system connected to the exhaust of the engine will therefore generate large temperature fluctuations. However, the exhaust gas treatment of the engine depends on the exhaust temperature of the post-treatment. Severe exhaust te...
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Login to View More IPC IPC(8): F01N9/00F01N11/00
CPCF01N11/002F01N9/00F01N2240/16Y02T10/40
Inventor 何传成李明星周承忠
Owner GUANGXI YUCHAI MASCH CO LTD