Sealing detection device for electronically-controlled high pressure common rail system
A high-pressure common rail system, sealing performance detection technology, applied in the direction of measuring device, charging system, fuel injection device, etc. and connecting rod bush damage, etc., to avoid multiple starts, reduce the number of disassembly and assembly, and ensure reliability.
Inactive Publication Date: 2017-11-24
HENAN DIESEL ENGINE IND
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Problems solved by technology
Multiple starts will cause damage to the main bearing bush and connecting rod bush, and even strain the cylinder liner of the diesel engine.
[0009] Finally, when the common rail diesel engine is started, the maximum pressure established in the common rail pipe is generally only 600bar, and it is impossible to detect the sealing of the electronically controlled high-pressure common rail system under various pressures, which seriously affects the reliability of the common rail diesel engine
Method used
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[0018] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:
[0019] Such as figure 1 shown, and refer to figure 2 , image 3 , an electronically controlled high-pressure common rail system leak detection device, the detection device has a common rail fuel injection pump 13 that is separated from the common rail diesel engine; the common rail fuel injection pump 13 is fixed on the bracket 2 through a support 14; One end of the above-mentioned support 14 is connected to the common rail fuel injection pump through bolt VI21, and one end is connected to the bracket 2 through bolt V12; the support 14 is used to prevent the vibration of the common rail fuel injection pump from causing quality problems; corresponding to the configuration of the common rail fuel injection pump 13, it is useful The motor 6 to drive its action; the motor 6 is fixed on the bracket 2, and is coaxially arranged with the common rail f...
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The invention belongs to the technical field of diesel engines and relates to a sealing detection device for an electronically-controlled high pressure common rail system. The sealing detection device comprises a common rail fuel injection pump separate from a common rail diesel engine; a motor for driving the common rail fuel injection pump to act is arranged in correspondence with the common rail fuel injection pump; an inlet of an oil-water separator is communicated with a fuel barrel through a fuel pipe V; a low pressure delivery pump outlet of the common rail fuel injection pump is connected with a fuel inlet of a fuel filter through a fuel pipe I; a fuel outlet of the fuel filter is connected with a fuel inlet of the common rail fuel injection pump; a high pressure fuel outlet of the common rail fuel injection pump is connected with an electronically-controlled high pressure common rail system through a high pressure fuel pipe; a fuel return hole of the common rail fuel injection pump is connected with the electronically-controlled high pressure common rail system through a high pressure fuel pipe; a fuel return hole of the common rail fuel injection pump is communicated with the fuel barrel through fuel pipe IV. The sealing detection device ensures test reliability of a common rail diesel engine, and working efficiency is improved.
Description
technical field [0001] The invention belongs to the technical field of diesel engines, and relates to an electronically controlled high-pressure common rail system leak detection device. Background technique [0002] In order to meet the increasingly stringent emission regulations, diesel engine manufacturers around the world are actively developing new products to reduce diesel engine emissions. The electronically controlled high-pressure common rail fuel injection technology is unique because of its good application prospects. [0003] Electronically controlled high-pressure common rail fuel injection technology is to deliver high-pressure fuel to the common rail pipe by the common rail fuel injection pump. , the change of rotational speed, adjust the fuel injection pressure and fuel injection quantity respectively, and precisely optimize the combustion efficiency, so as to improve the economy of the diesel engine and reduce the emission in the whole range of working condi...
Claims
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Login to View More IPC IPC(8): F02M63/02F02M65/00
CPCF02M63/0265F02M63/0275F02M65/00F02M65/003
Inventor 张祥臣季永会宋杨史晓林
Owner HENAN DIESEL ENGINE IND