Vehicle power output control method and device

Abstract

The invention discloses a vehicle power output control method and a device. The method comprises the steps that when a unit coordination controller receives required power, the environment temperatureof the environment where a vehicle is located currently is obtained, a power mode corresponding to the environment temperature is determined, and a power output instruction containing the required power and power mode information is sent to a motor controller; and the motor controller is used for determining the engine rotating speed corresponding to the required power based on the power mode andsending the engine rotating speed to an engine controller, so that the engine controller controls an engine by utilizing the engine rotating speed to meet the power requirement of the vehicle; a unitcoordination controller is used for selecting a targeted power mode according to the using environment temperature of the whole vehicle and sending different power output instructions to the motor controller, and therefore the motor controller is used for selecting the rotating speed of the engine in a targeted mode according to the required power so as to meet the dynamic property requirement under the current environment temperature.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a vehicle power output control method and device. Background technique [0002] In the prior art, the vehicle power output control method is to determine the engine speed corresponding to the required power according to the pre-calibrated map curve between the required power and the rotational speed, so as to meet the vehicle power demand. [0003] In practical applications, under different ambient temperatures, due to changes in atmospheric pressure and air density, the actual output power of the engine is different under the same speed conditions. In the prior art, no matter the vehicle is in any environment In temperature, for the same power demand, the engine corresponds to only one speed control, which leads to a mismatch between the actual output power of the vehicle and the power demand of the vehicle. Contents of the invention [0004] The purpose of the present invent...

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Problems solved by technology

[0003] In practical applications, under different ambient temperatures, due to changes in atmospheric pressure and air density, the actual output power of the engine is different under the same speed conditions. In the prior art, no matter the vehicle is in any environment In the temperature, the same power demand, the engine corresponds to only one speed control, which leads to the mismatch between the actual output power of the vehicle and the power demand of the vehicle

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