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Air valve closing device, piston type internal combustion engine, vehicle and combustion stability improving method

A valve-closing, internal-combustion engine technology, applied to internal-combustion piston engines, valve devices, combustion engines, etc., can solve the problems that the fuel-saving potential of the continuous variable valve lift technology cannot be fully realized, and the cost rises, so as to avoid combustion instability Lift zone, reduce daily use cost, improve combustion efficiency and work stability

Active Publication Date: 2014-05-14
SAIC MOTOR
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  • Description
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AI Technical Summary

Problems solved by technology

[0006] However, the result of adopting the above measures will not only cause the cost to rise, but also the fuel-saving potential of the continuously variable valve lift technology cannot be fully realized.

Method used

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  • Air valve closing device, piston type internal combustion engine, vehicle and combustion stability improving method
  • Air valve closing device, piston type internal combustion engine, vehicle and combustion stability improving method
  • Air valve closing device, piston type internal combustion engine, vehicle and combustion stability improving method

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Embodiment Construction

[0038] First of all, it should be noted that the specific structure, steps, features, and advantages of the valve closing device, piston internal combustion engine, automobile, and the method for improving the combustion stability of the piston internal combustion engine will be explained in detail below by way of examples. However, all The description is only for illustration, and should not be understood as forming any limitation on the present invention. In addition, any single technical feature described or implied in each embodiment mentioned herein, or any single technical feature displayed or implied in each drawing, can still be used in these technical features (or their equivalents). ) Continue to perform any combination or deletion, so as to obtain more other embodiments of the present invention that may not be directly mentioned in this article.

[0039] See figure 1 In the figure, the basic structure of a piston internal combustion engine equipped with an example of t...

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Abstract

The invention relates to an air valve closing device. The air valve closing device is arranged inside the case of a piston type internal combustion engine and connected with at least one air cylinder, and the air cylinder is provided with at least one air inlet valve with a continuously-variable air valve lift device. The air valve closing device comprises a housing, a first reset spring, a hydraulic gap adjuster, a first locking pin, a second locking pin and a second reset spring. The invention also relates to the internal combustion engine comprising the valve closing device, a vehicle comprising the valve closing device and a combustion stability improving method of the piston type internal combustion engine. The air valve closing device, the piston type internal combustion engine, the vehicle and the combustion stability improving method can improve the combustion and working stability of the internal combustion engine under the small lift of the air inlet valve and is beneficial to achieving the aims of reducing the usage cost and the energy consumption to protect natural environment and the like.

Description

Technical field [0001] The invention relates to the technical field of internal combustion engines, in particular to a valve closing device, a piston type internal combustion engine, an automobile, and a method for improving the combustion stability of a piston type internal combustion engine. Background technique [0002] Due to the need for flame propagation stability, the in-cylinder charge of an ignition type internal combustion engine (i.e. gasoline engine) is positively correlated with the fuel injection volume determined by the operating conditions. Therefore, it is necessary to control the intake air flow through the throttle valve. As a result, when the suction stroke of the gasoline engine is not full, the cylinder has a significant vacuum degree, which causes pumping loss. Due to the pumping loss, fuel economy will deteriorate, and the lower the load, the more significant the deterioration. [0003] For the existing continuously variable valve lift (CVVL) technology, it...

Claims

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Application Information

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IPC IPC(8): F01L13/00F02M25/07F02M26/13F02M26/23F02M26/33
CPCY02T10/12
Inventor 张华
Owner SAIC MOTOR
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