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CF common rail system

A common rail system and common rail technology, applied in the field of CF common rail system, can solve the problem that the high-pressure common rail fuel injection system cannot be used for small and medium-sized diesel engines, etc., and achieve small size, high fuel supply efficiency, and good manufacturability. Effect

Pending Publication Date: 2018-05-01
NANYUE FUEL INJECTION SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a light-duty diesel engine with low power of 37KW and below for the problem that the existing high-pressure common rail fuel injection system cannot be used for small and medium-sized diesel engines, which can meet the national IV and national V emission requirements. CF common rail system

Method used

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  • CF common rail system
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Embodiment Construction

[0035] see figure 1 , figure 1 A CF common rail system shown in , including a fuel tank 1, a pump, a rail-integrated common-rail fuel supply pump 2, an ECU 3, four fuel injectors 4, and an oil delivery pump 600 in the pump and rail-integrated common-rail fuel supply pump 2 The oil inlet of the pump is communicated with the fuel tank 1 through the oil pipe, and the outlet of the pressure stabilizing valve part 600 in the pump and rail integrated common rail fuel supply pump 2 is communicated with the fuel tank 1 through the oil pipe; The four oil outlet joints 1300 on the compressor 1000 are connected with the oil inlet pipe joints on the four injectors 4 through high-pressure oil distribution pipes.

[0036] The pressure sensor 1400 in the pump and rail integrated common rail fuel supply pump 1 is connected to the signal of ECU3, and the ECU3 is also connected to the pump and the electromagnet in the electromagnetic valve part 700 of the rail integrated common rail fuel suppl...

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Abstract

The invention discloses a CF common rail system. The CF common rail system comprises an oil tank, a pump and rail integrated type common rail oil supplying pump, an ECU and at least one oil injector.An oil inlet of an oil delivering pump in the pump and rail integrated type common rail oil supplying pump communicates with the oil tank through an oil pipe. An outlet of a pressure stabilizing valvepart in the pump and rail integrated type common rail oil supplying pump communicates with the oil tank through an oil pipe. At least one oil outlet joint on a pressure accumulator in the pump and rail integrated type common rail oil supplying pump is connected with an oil inlet pipe joint on the at least one oil injector through a high-pressure oil distributing pipe. A pressure transducer in thepump and rail integrated type common rail oil supplying pump is in signal connection with the ECU. The ECU is further in control connection with an electromagnet in an electromagnetic valve part in the pump and rail integrated type common rail oil supplying pump and electromagnets in the oil injectors. The ECU controls the energized state of the electromagnet in the electromagnetic valve part inthe pump and rail integrated type common rail oil supplying pump so as to control the working state of the pump and rail integrated type common rail oil supplying pump. The oil injectors control the oil injecting time, pre-injecting and / or post-injecting through the ECU, so that needs of an engine are met accurately.

Description

[0001] In this invention, the application number is 201710522214.9, the application date is June 30, 2017, and the invention patent application named pump and rail integrated common rail oil supply pump is the priority. technical field [0002] The invention relates to the technical field of fuel supply pumps for diesel engines, in particular to a CF common rail system applied to light-duty diesel engines with low power of 37KW and below, which can meet the emission requirements of National IV and National V. Background technique [0003] With the promotion of national three, national four, national five or higher emission standards for diesel engines, the high-pressure common rail fuel injection system has become the mainstream technology of diesel engine fuel systems. The mainstream high-pressure common rail fuel injection system is composed of common rail fuel pump, high pressure fuel rail, common rail injector, ECU and sensors. In this system, the overall volume of the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M37/06F02M37/14F02M39/02F02M51/04F02M51/06F02M55/02F02M59/02F02M59/10F02M59/46F02M59/48F02D41/40
CPCF02D41/3827F02D41/402F02D41/405F02M37/0047F02M37/045F02M37/06F02M37/14F02M39/02F02M51/04F02M51/061F02M55/025F02M59/022F02M59/102F02M59/466F02M59/48F02D2200/0602
Inventor 龙美彪梁文欧阳玲湘黄民备邓飞谭四喜
Owner NANYUE FUEL INJECTION SYST CO LTD
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