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Cross elastic connection device of high-pressure pump shaft and transmission shaft of engine

A technology of elastic connection and cross connection, which is applied to engine components, machines/engines, fuel injection devices, etc., can solve the problems of high processing cost and complex connection structure, and achieve the effects of fast processing, convenient installation and simple design.

Active Publication Date: 2013-12-11
CHINA NORTH ENGINE INST TIANJIN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problem characteristics of complex connection structure and high processing cost between the test single-cylinder diesel engine transmission shaft and the high-pressure pump shaft, the present invention proposes a cross elastic connection device between the engine high-pressure pump shaft and the transmission shaft

Method used

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  • Cross elastic connection device of high-pressure pump shaft and transmission shaft of engine
  • Cross elastic connection device of high-pressure pump shaft and transmission shaft of engine
  • Cross elastic connection device of high-pressure pump shaft and transmission shaft of engine

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Embodiment Construction

[0021] According to the size of the cone surface of the shaft head of the high-pressure oil pump in the high-pressure common rail system, the internal profile of the cross claw of the high-pressure pump shaft is processed, and the bonding degree of the two cone surfaces is ensured to be greater than 85% during the processing;

[0022] Install the processed cross claw of the driving shaft and the driving shaft. During the installation process, the coloring inspection of the cone surface should be carried out to ensure the fit of the two cone surfaces. There is no need for positioning between the cone surfaces, and the drive shaft compression bolts are used to compress the two. There is no phase requirement between the drive shaft cross claw and the drive shaft; install the processed high-pressure oil pump shaft cross claw with the high-pressure oil pump shaft, and install During the process, the color inspection of the cone surface should be carried out to ensure the fit of the ...

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Abstract

The invention relates to a cross elastic connection device of a high-pressure pump shaft and a transmission shaft of an engine. The cross elastic connection device comprises the high-pressure pump shaft, a high-pressure pump shaft gland nut, a high-pressure pump shaft cross raised claw, a cross connecting block, a transmission shaft cross raised claw, a transmission shaft gland nut and the transmission shaft. An inner conical surface is arranged in the high-pressure pump shaft cross raised claw, a corresponding outer conical surface is arranged outside the high-pressure pump shaft, and the inner conical surface of the high-pressure pump shaft cross raised claw and the outer conical surface of the high-pressure pump shaft are attached to each other and compressed through the high-pressure pump shaft gland nut. An inner conical surface is arranged in the transmission shaft cross raised claw, a corresponding outer conical surface is arranged outside the transmission shaft, and the inner conical surface of the transmission shaft cross raised claw and the outer conical surface of the transmission shaft are attached to each other and compressed through the transmission shaft gland nut. The cross elastic connection device has the advantages of being simple in design, rapid in processing, small in error generated in a processing process, convenient to install and low in rate of test faults, saves test cost, and improves operation reliability and repairability of the single-cylinder engine used for a test.

Description

technical field [0001] The invention belongs to the technical field of diesel engine testing, and in particular relates to a connection device between an engine high-pressure pump shaft and a transmission shaft. Background technique [0002] With the continuous improvement of engine power density and increasingly stringent emission regulations, the high-pressure common rail fuel supply system has the characteristics of flexible and adjustable fuel injection timing, cycle fuel injection volume, cycle fuel injection times, fuel injection pressure and fuel injection rate curve , Gradually become the preferred oil supply system for diesel engines. The role of the high-pressure oil pump is to build low-pressure oil into high-pressure oil, which plays a pivotal role in the high-pressure common rail oil supply system. How to output the power of the transmission system to the high-pressure oil pump has also become an important issue. [0003] The patent application with application...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M39/02
Inventor 于波樊巨廷李耀宗庄丽檀丽宏李晓娟张锡瑞柴国英
Owner CHINA NORTH ENGINE INST TIANJIN
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