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Plunger sleeve seal pad for locomotive diesel engine oil jet pump

A technology of diesel engine and fuel injection pump, which is applied in the direction of fuel injection pump, machine/engine, mechanical equipment, etc., can solve the problems that the gasket cannot be well sealed and the oil is leaking from the rack, so as to save fuel and prevent the phenomenon of oil leaking from the rack. , to avoid the effect of extending the bench test

Inactive Publication Date: 2007-06-27
CRRC QISHUYAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is: to overcome the problem that the existing gasket at the step where the plunger sleeve of the fuel injection pump is combined with the pump casing cannot be well sealed, and to solve the problem of oil leakage from the rack

Method used

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  • Plunger sleeve seal pad for locomotive diesel engine oil jet pump

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Embodiment Construction

[0018] Accompanying drawing 1 and 2 have shown the structure of the 280 diesel fuel injection pumps that the present invention is applied, and the fuel oil low-pressure chamber 2 of fuel injection pump is owing to have the fuel gas of the pulse pressure that leaks from the fuel high-pressure chamber 1, and the fuel gas of leakage except part discharges from oil drain hole , there is still some oil and gas leaking from the step where the plunger sleeve 5 and the pump casing 6 combine to the gap between the rack 4 and the pump casing 6, and overflowing to the outside, thus forming the phenomenon of rack oil blowing.

[0019] The plunger sleeve sealing gasket 3 of a locomotive diesel engine fuel injection pump of the present invention is installed at the step where the plunger sleeve 5 and the pump casing 6 are combined, and is a steel annular gasket coated with tin, the steel annular gasket The thickness of the tin-plated layer on the surface is 0.02 mm to 0.05 mm. Through exper...

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Abstract

An annular sealing pad for the plunger sleeve of oil spraying pump used in diesel engine of locomotive is made of steel and has a plated tin layer (0.02-0.05 mm in thickness) on its surface for higher sealing effect.

Description

technical field [0001] The invention relates to the technical field of fuel injection pumps for locomotive diesel engines, in particular to a plunger sleeve sealing gasket for fuel injection pumps for locomotive diesel engines. Background technique [0002] The fuel injection pump is an important part of the locomotive diesel engine. Its function on the diesel engine is to compress the low-pressure fuel into high-pressure fuel according to the working sequence of the diesel engine, and regularly and quantitatively spray the mist fuel into the combustion chamber through the fuel injector for combustion. , and can automatically control and adjust the fuel supply of the fuel injection pump according to the requirements of the operator and the change of the working load of the diesel engine. Therefore, the performance of the diesel engine depends to a large extent on whether the fuel injection pump is working normally. [0003] At present, most of the fuel injection pumps of lo...

Claims

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Application Information

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IPC IPC(8): F02M59/44
Inventor 刘渤海
Owner CRRC QISHUYAN CO LTD