Energy-saving method, controller and system for engineering machinery and land leveler

Abstract

The invention discloses an energy-saving method, controller and system for engineering machinery and a land leveler and relates to the field of energy saving of engineering machinery. The energy-saving method for the engineering machinery includes the steps that the energy-saving controller receives a gear position selecting signal and an accelerator pedal signal; if the selected gear position is not a highest gear position, the energy-saving controller modulates the gear position selecting signal and sends the gear position selecting signal to a gear position controller, and an actual gear position corresponding to the modulated gear position selecting signal is made to be higher than the selected gear position; and the energy-saving controller modulates the accelerator pedal signal and sends the accelerator pedal signal to an engine electronic control unit, and the engine rotating speed corresponding to the modulated accelerator pedal signal is made to be smaller than the engine rotating speed corresponding to an non-modulated accelerator pedal signal. The engine rotating speed is decreased while the gear position is improved, the engineering machinery can achieve the speed expected by a driver, the oil consumption of the engineering machinery is reduced, and the energy-saving method for the engineering machinery is applicable to the common non-limit heavy load work conditions.

Description

technical field [0001] The invention relates to the field of construction machinery energy conservation, in particular to a construction machinery energy conservation method, a controller, a system and a motor grader. Background technique [0002] Motor graders are important equipment for large-area site leveling, road construction and road maintenance, and various auxiliary tasks. Due to the wide range of uses, the engine power is usually configured for extreme conditions. However, in the soil scraping operation commonly used by motor graders, the load of the whole machine is relatively light, and the actual power of the engine is lower than the rated power. In addition, due to the low speed of the vehicle during the commonly used low-gear operation, the power demand of the engine by the whole machine is also lower than the rated power of the engine. During the operation of the motor grader, the driver usually operates with the maximum throttle for the convenience and com...

AI Technical Summary

Problems solved by technology

[0004] However, the situation where tire slippage occurs is the extreme heavy-duty working condition. Under the common working conditions of motor graders, the automatic speed regulation and power regulation functions of the engine itself will make the above methods invalid

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