Startup assist device for hydraulic engine system in ultralow temperature environment and startup method therefor

Abstract

The invention discloses a startup assist device for a hydraulic engine system in an ultralow temperature environment and a startup method therefor. The startup assist device comprises a detachable insulation sheath which forms a closed cavity and receives a hydraulic system and an engine system for an engineering machinery into the closed cavity, a heating device which is arranged in the closed cavity and is used for heating the hydraulic system and the engine system, and a hydraulic test device for detecting hydraulic pressure in the hydraulic system. The startup assist device and the startup method disclosed by the invention can start the hydraulic engine system in the ultralow temperature environment so as to avoid damage of parts, and the startup assist device is simple in structure and low in cost.

Description

technical field [0001] The invention relates to the start-up of a hydraulic engine system in an ultra-low temperature environment, in particular to a start-up auxiliary device and a start-up method for a hydraulic engine system in an ultra-low temperature environment. Background technique [0002] At present, most large-scale construction machinery uses the engine system to drive the hydraulic system, and then promotes the movement of the construction machinery through the hydraulic system. In many cases, due to space constraints, the engine is directly connected to the hydraulic oil pump, so during the engine startup process, The engine not only has to overcome the resistance torque of the engine itself, but also overcomes the initial resistance torque of the hydraulic oil pump system. [0003] However, when the external ambient temperature is very low in winter, that is, in an ultra-low temperature environment, the viscosity of hydraulic oil and lubricating oil will increa...

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Problems solved by technology

[0003] However, when the external ambient temperature is very low in winter, that is, in an ultra-low temperature environment, the viscosity of hydraulic oil and lubricating oil will increase significantly, resulting in a substantial increase in the initial resistance torque of the hydraulic oil pump system. The resistance torque of the engine will increase the torque required for starting the starter motor, and it will be difficult for the engine to start in an ultra-low temperature environment.

If the engine is started forcibly, the components of the engine and hydraulic system will be damaged due to lack of sufficient lubrication, resulting in a large amount of property loss, and at the same time making the engine system and hydraulic system unable to work normally

[0004] In the prior art, the way to solve the above-mentioned engine starting problem is generally to replace high-quality hydraulic oil to reduce the resistance torque of the hydraulic oil pump system, so that the engine can be started smoothly. The disadvantage is that replacing hydraulic oil requires a lot of manpower and material resources, and the High-quality hydraulic oil generally has a high cost, and operates in different regions with large temperature differences. The working efficiency of construction machinery is very different, and it is also easy to cause deterioration of hydraulic oil, which in turn causes property loss; another solution Manually heating the engine system and hydraulic system, such as placing an electric oven outside, or heating water on the engine, oil pump, oil tank, and hydraulic pipeline, etc., has the disadvantage of wasting a lot of manpower and material resources, low energy utilization efficiency, and Not ideal, still risks damage to engine system and hydraulic system components

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