Valve closing device, piston internal combustion engine, vehicle and method for improving combustion stability

A valve closing, internal combustion engine technology, applied to internal combustion piston engines, valve devices, combustion engines, etc., can solve the problems of the continuous variable valve lift technology's inability to fully realize the fuel-saving potential and rising costs, and avoid combustion instability. The effect of lifting area, reducing daily use cost, improving combustion efficiency and working stability

Active Publication Date: 2016-05-18
SAIC MOTOR
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Valve closing device, piston internal combustion engine, vehicle and method for improving combustion stability
  • Valve closing device, piston internal combustion engine, vehicle and method for improving combustion stability
  • Valve closing device, piston internal combustion engine, vehicle and method for improving combustion stability

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Embodiment Construction

[0038] First of all, it should be noted that the specific structure, steps, characteristics and advantages of the valve closing device, the piston internal combustion engine, the automobile and the method for improving the combustion stability of the piston internal combustion engine will be described in detail below, but all The descriptions are for illustration only, and should not be construed as limiting the invention in any way. In addition, any single technical feature described or implied in each embodiment mentioned herein, or any single technical feature shown or implied in each drawing, can still be described in these technical features (or their equivalents) ) to continue any combination or deletion, so as to obtain more other embodiments of the present invention that may not be directly mentioned herein.

[0039] see figure 1 , which shows the basic composition of a piston internal combustion engine equipped with an example of the present valve closing device. Su...

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PUM

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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 internal combustion engine, an automobile and a method for improving the combustion stability of the piston internal combustion engine. Background technique [0002] Due to the requirement of flame propagation stability, the cylinder charge size of ignition internal combustion engine (that is, gasoline engine) is positively related to the fuel injection quantity determined by the working conditions, so it is necessary to control the intake air flow through the throttle valve, so that As a result, when the suction stroke of the gasoline engine is not fully loaded, there is a significantly large vacuum in the cylinder, which causes pumping loss. Fuel economy deteriorates due to pumping losses, and the deterioration is more pronounced at lower loads. [0003] For the existing continuously variable valve lift (CVVL) technology, it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L13/00F02M26/17F02M26/23F02M26/13F02M26/33
CPCY02T10/12
Inventor 张华
Owner SAIC MOTOR
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