Smoke intensity control method, smoke intensity control device for motive power machine and motive power machine

Abstract

The embodiment of the invention discloses a smoke intensity control method, a smoke intensity control device for a motive power machine and the motive power machine. The motive power machine comprisesa hydraulic system and an engine. The hydraulic system comprises a main pump. The smoke intensity control method for the motive power machine comprises the following steps: acquiring a rotating speedcommand of the engine, a demand flow of the main pump and a system pressure value of the main pump; determining a smoke intensity discharge working condition of the motive power machine according tothe rotating speed command of the engine, the demand flow of the main pump and the system pressure value of the main pump, wherein the smoke intensity discharge working condition comprises a normal discharging working condition and an overproof discharging working condition; and if the smoke intensity discharge working condition of the motive power machine is the overproof discharging working condition, controlling the increasing speed of the power of the engine and the increasing speed of the power of the main pump. According to the smoke intensity control method, the smoke intensity controldevice for the motive power machine and the motive power machine, on the premise of controlling the smoke intensity effectively, the power of the engine is matched with the power of a load, so that aproblem of response delay of the engine is solved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of power machine control, and in particular, to a power machine smoke control method, device and power machine. Background technique [0002] In life and production, various vehicles such as excavators will emit smoke when they are working or running. When the exhausted smoke is too high, the problem of excessive smoke emission will occur. Therefore, reliable control of smoke is required. [0003] At present, the existing smoke control method mainly reduces the smoke emission by controlling the engine, and cannot adjust the external load such as the hydraulic system. The same set of smoke emission parameters is used under any working condition, but only by The control of the engine to reduce the smoke emission will bring about the mismatch between the engine power and the load power and the delay of the engine response. Contents of the invention [0004] Embodiments of the presen...

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Problems solved by technology

[0003] At present, the existing smoke control method mainly reduces the smoke emission by controlling the engine, and cannot adjust the external load such as the hydraulic system. The same set of smoke emission parameters is used under any working condition, but only by The control of the engine to reduce the smoke emission will cause the mismatch between the engine power and the load power and the delay of the engine response

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