Variable valve lift mechanism control method and terminal equipment
A valve lift and control method technology, applied in mechanical equipment, engine components, machines/engines, etc., can solve the problems of battery feeding, increase gasoline consumption, etc., and achieve the effect of reducing power feeding and reducing fuel consumption
Active Publication Date: 2022-07-05
GREAT WALL MOTOR CO LTD
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Problems solved by technology
[0004] In view of this, the embodiment of the present invention provides a variable valve lift mechanism control method and terminal equipment, aiming to solve the problem of variable control in the prior art When the valve lift mechanism performs the lift operation, it is prone to the problem of battery feed and increased gasoline consumption
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[0043] In the following description, for the purpose of illustration rather than limitation, specific details such as specific system structures and technologies are set forth in order to provide a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
[0044] In order to illustrate the technical solutions of the present invention, the following specific embodiments are used for description.
[0045] figure 1 A schematic diagram of an implementation flow of a method for controlling a variable valve lift mechanism provided by an embodiment of the present invention, figure 2 It is a schematic diagram of the variable val...
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The invention is suitable for the technical field of engines, and provides a variable valve lift mechanism control method and terminal device.The variable valve lift mechanism control method comprises the steps that after an engine is powered on, the temperature of the engine is measured; when the temperature of the engine is smaller than the first preset temperature, the engine is started through a first valve lift; when the temperature of the engine is larger than or equal to the second preset temperature, the target valve lift of the engine is calculated according to the vehicle torque requirement; when the valve lift switching condition is met, the variable valve lift mechanism is controlled to move towards the lift end according to the target valve lift, when the variable valve lift mechanism reaches the target lift end, the lift end stops moving, and when the deviation between the actual valve lift and the target valve lift meets the requirement, the variable valve lift mechanism stops moving. It is determined that the variable valve lift mechanism reaches the target valve lift. Therefore, appropriate lift motion can be adopted according to the temperature of the engine, oil consumption during starting is reduced, operation can be conducted when the engine is powered on, and feed of the storage battery is reduced.
Description
technical field [0001] The invention belongs to the technical field of engines, and in particular relates to a control method and terminal equipment of a variable valve lift mechanism. Background technique [0002] In order to cope with the current situation of lack of resources and environmental pollution, countries around the world have launched a wave of energy saving and emission reduction. For example, the automobile engine adopts a multi-stage variable valve lift mechanism, which can reduce the impact caused by pumping loss and obtain the best fuel economy. [0003] The multi-stage variable valve lift mechanism is favored by the advantages of low cost and small space occupation. Generally, it adopts a sliding camshaft or a switchable rocker arm to realize variable lift, which can be changed according to the operating conditions of the engine. The lift of the intake and exhaust valves or the valve is opened multiple times to realize the multi-stage change of the valve ...
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IPC IPC(8): F01L13/00
CPCF01L13/0015Y02T10/12
Inventor 王岩刘鲁平
Owner GREAT WALL MOTOR CO LTD