An engine idle speed control method, system and vehicle

Abstract

The invention provides an engine idle speed control method, system and vehicle. The control method controls the engine idle speed at the first set value when the air conditioner compressor is turned on and the vehicle speed meets the set value, and then controls the engine idle speed at the first set value, and then when the temperature in the vehicle is lower than the set temperature When the value is set, the engine idle speed is controlled to decrease. In the present invention, on the premise of ensuring the temperature in the vehicle and the comfort of the passengers, the idle speed increase of the engine is gradually reduced instead of gradually increased, and fuel saving is realized on the premise of ensuring the comfort. Using the duty cycle of the magnetic field as the standard for judging the engine idle speed control can more accurately reflect the electricity demand of the vehicle, realize the precise control of the idle speed fuel consumption, and achieve the purpose of reducing the idle speed fuel consumption.

Description

technical field [0001] The invention belongs to the technical fields of energy saving and engine idling, and in particular relates to an engine idling control method, system and vehicle. Background technique [0002] With the consumption of petroleum resources, more and more attention has been paid to the energy-saving technology of vehicles. As the main energy-consuming device of vehicles, the improvement of the performance of engines directly affects the economic performance of vehicles. At present, when the vehicle is using the air conditioner, the engine idle speed is usually directly increased, and the increase in the engine idle speed will directly lead to an increase in its energy consumption. Therefore, when the air conditioner is turned on, reasonable control of the engine speed can reduce the energy consumption of the vehicle. [0003] The idling state refers to a working condition when the engine is idling. In real life, if the idle speed of the engine is too low...

AI Technical Summary

Problems solved by technology

However, this patent only adjusts the speed of the engine at idle speed according to the judgment conditions, without considering whether the temperature in the car affects the comfort of passengers

[0005] Moreover, the patent document uses the current power and generator voltage / current as the main criteria for judging whether to increase the engine idle speed. Since the entire generator working process is in a transient state, the current power and generator voltage / current cannot correctly reflect the real Changes in working status and vehicle requirements

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