A method for preventing black smoke from being emitted when construction machinery is loaded and started
A construction machinery, black smoke technology, applied in the direction of mechanical equipment, machine/engine, engine control, etc., can solve the problems of diesel engine and hydraulic pump power mismatch, diesel engine black smoke, etc., to achieve easy start-up and improve work efficiency Effect
Active Publication Date: 2021-04-20
CHTC JOVE HEAVY IND
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[0005] The purpose of the present invention is to provide a method for preventing black smoke when construction machinery is loaded and started, so as to solve the problem that the diesel engine and the hydraulic pump power do not match when the construction machinery is loaded and started, which causes black smoke from the diesel engine
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[0025] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in various ways defined and covered by the claims.
[0026] see figure 2 , a kind of method of the present invention prevents construction machinery from emitting black smoke when it is loaded and started, comprising the following steps:
[0027] Step S1: first increase the absorbed power of the hydraulic main pump 5 to the first power value, and judge for the first time whether the absorbed power of the hydraulic main pump needs to be reduced; if the absorbed power of the hydraulic main pump is maintained at the first power for a period of time Within the value, keep the absorbed power of the hydraulic main pump unchanged; if the absorbed power of the hydraulic main pump continues to be greater than the first power value for a period of time, then reduce the absorbed power of the hydraulic main pump. The ...
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The invention discloses a method for preventing black smoke from being emitted when a construction machine is loaded and started, comprising: first raising the absorbed power of a hydraulic main pump to a first power value, and first judging whether the absorbed power of the hydraulic main pump needs to be lowered; Continue to increase the absorbed power of the hydraulic main pump to the second power value, and judge for the second time whether the absorbed power of the hydraulic main pump needs to be lowered; finally, increase the absorbed power of the hydraulic main pump to the working power; among them, the first two judgments are both It is necessary to decide whether to reduce the absorbed power of the hydraulic main pump according to the result. The invention increases the absorbed power of the hydraulic main pump to its working power in three times, and can adjust the absorbed power of the hydraulic main pump when the absorbed power of the hydraulic main pump does not match the power of the diesel engine, thereby reducing the load on the electronically controlled diesel engine. The load at the time of starting avoids the problems of black smoke, noise and heat generated when the electronically controlled diesel engine is started with load, making the electronically controlled diesel engine easier to start.
Description
technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a method for preventing black smoke from being emitted when the engineering machinery is loaded and started. Background technique [0002] The horsepower / torque of the hydraulic main pump of construction machinery such as excavators, horizontal directional drilling rigs, and rotary drilling rigs has been set, so when the construction machinery suddenly loads and starts, the absorbed power of the hydraulic pump will quickly follow the set rate. straight up to operating power, as figure 1 shown. However, when the electronically controlled diesel engine accelerates, especially at high altitudes or at low temperatures, the influence of air density or hydraulic oil viscosity will cause the electronically controlled diesel engine to emit serious smoke during acceleration, which will affect the normal work and overall performance of construction machinery. The service li...
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IPC IPC(8): F02D29/04
CPCF02D29/04
Inventor 刘祥彪李春雷刘健
Owner CHTC JOVE HEAVY IND