Super-knock test device and test method for supercharged gasoline engine
A technology of super knocking and test device, which is applied in measurement devices, measuring rapid changes, instruments, etc., can solve the problems of difficulty in super knocking, and achieve the effect of stable pre-ignition
Active Publication Date: 2016-09-21
TSINGHUA UNIV
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Problems solved by technology
Therefore, it is very difficult to study super-knock, and there is no mature experimental device for super-knock research.
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[0029] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0030] In the description of the present invention, it should be noted that unless otherwise specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; directly or indirectly through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.
[0031] like figure 1 As shown, a super-knock test device for a supercharged gasoline engine provided by the embodiment of the present invention includes a cylinder block 3, a cylinder head 6, a piston 2, an intake val...
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The invention relates to the technical field of internal combustion engines, and provides a turbocharged gasoline engine super detonation test device comprising a cylinder body, a cylinder cover, a piston, an intake valve, an exhaust valve and a spark plug. The intake valve and the exhaust valve are respectively and correspondingly connected with an intake pipe and an exhaust pipe. An inlet temperature control and pressure stabilizing cavity, a throttle valve, a particle injector and a gasoline sprayer are sequentially arranged in the intake direction of the intake pipe. The particle injector is used for injecting pre-ignition simulation particles. The particle injector is provided with a temperature control heating system used for heating the pre-ignition simulation particles. The exhaust pipe is provided with an exhaust gas analyzer. The inside of the cylinder body is provided with a cylinder pressure sensor. By adopting the device, super detonation of different intensities can be stably produced by injecting pre-ignition simulation particles of different temperatures and different diameters through the particle injector in a certain thermodynamic state, the intensity of super detonation is determined by extracting the pressure fluctuation information of the cylinder body through the cylinder pressure sensor, and comprehensive research on super detonation is conducted by changing other thermodynamic factors.
Description
technical field [0001] The invention relates to the technical field of electronic circuit assembly, and in particular provides a super-knock test device and a test method for a supercharged gasoline engine. Background technique [0002] The direct-injection supercharged downsizing gasoline engine can flexibly control fuel injection and greatly reduce fuel consumption, and has become the mainstream of gasoline engine development in recent years. However, in low-speed and high-load direct-injection supercharged engines, an abnormal combustion phenomenon that is extremely harmful to the engine and has not been fully understood so far is prone to occur-super knocking. Super knock occurs pre-ignition before spark ignition, and the maximum explosion pressure is several times higher than that of normal combustion, and may even exceed 200bar, and is accompanied by huge pressure oscillations, which occur randomly and are extremely harmful to the engine. Therefore, it is very difficu...
Claims
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IPC IPC(8): G01L23/22
Inventor 王志齐运亮王建昕刘辉
Owner TSINGHUA UNIV