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Hydraulic excavator fuel system and excavator

A hydraulic excavator and fuel system technology, which is applied in the field of hydraulic excavator fuel system and excavator, can solve the problems of affecting the operation of the engine, clogging the oil circuit, easy clogging of the pipeline, etc., so as to avoid normal operation, avoid clogging and avoid clogging The effect of the pipeline

Pending Publication Date: 2020-02-14
SHANGHAI SANY HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In areas with low temperature, such as: plateau, north, etc., the fuel system of excavators often causes waxing of diesel fuel due to improper selection of grades, which blocks the oil passage and affects the normal operation of the engine
[0003] It is difficult for related technologies to fully return the fuel in the fuel pipeline to the fuel tank, and the pipeline is still easy to block, and it is still difficult to avoid the problem of affecting the normal operation of the engine at low temperature

Method used

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  • Hydraulic excavator fuel system and excavator
  • Hydraulic excavator fuel system and excavator

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Embodiment Construction

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0025] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...

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Abstract

The invention relates to engineering machinery, in particular to a hydraulic excavator fuel system and an excavator. The hydraulic excavator fuel system provided by the invention comprises an engine,a fuel tank, an oil return pipe, an oil outlet pipe and an air pump. The two ends of the oil return pipe communicate with an oil discharge outlet of the engine and an oil return inlet of the fuel tank. The two ends of the oil outlet pipe communicate with an oil outlet of the fuel tank and an oil inlet of the engine. The air pump is arranged on the oil outlet pipe and used for pumping fuel oil in the oil outlet pipe and the oil return pipe into the fuel tank. The hydraulic excavator fuel system and the excavator provided by the invention can discharge residual fuel oil in the oil return pipe and the oil outlet pipe into the fuel tank sufficiently. The oil return pipe and the oil outlet pipe are not likely to be blocked. The situation that the excavator cannot operate normally at low temperature is avoided.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a hydraulic excavator fuel system and an excavator. Background technique [0002] In areas with low temperature, such as the plateau and the north, the fuel system of excavators often causes waxing of diesel oil due to improper selection of grades, which blocks the oil passage and affects the normal operation of the engine. [0003] In related technologies, it is difficult to fully return the fuel in the fuel pipeline to the fuel tank, and the pipeline is still easy to be blocked, and it is still difficult to avoid the problem of affecting the normal operation of the engine at low temperature. Contents of the invention [0004] The object of the present invention is to provide a hydraulic excavator fuel system and an excavator, which can fully discharge the residual fuel oil in the oil return pipe and the oil outlet pipe into the fuel tank, so that the oil return pipe and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M37/00F02M37/04F02M37/22F02M31/125
CPCF02M31/125F02M37/0052F02M37/04F02M37/22
Inventor 马广野刘兵邹云川
Owner SHANGHAI SANY HEAVY IND
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