Engine self-adaptation system based on vehicle operation condition and fuel-saving method

Abstract

Disclosed are an engine self-adaptive system and fuel saving method based on vehicle operating condition, the engine self-adaptive system comprising an information center and vehicle terminals in communication with the information center. Each vehicle terminal comprises a GPS navigation module, a running vehicle data collection module, a vehicle specifications and engine operating states memory, a wireless communication module, a calculation module, a decision-making module, a vehicle control module, and a human interface module. The vehicle control module adjusts an engine response characteristic and reduces the effect of improper throttle operation. A standard road resistance characteristic coefficient is an optimum and has a higher reference value such that the invention, for ensuring power performance for a vehicle, achieves fuel saving by properly controlling engine output.

Description

technical field [0001] The present invention relates to the field of vehicle engine control, and more specifically relates to an engine self-adaptive system and a fuel-saving method based on vehicle operating conditions. The effect of vehicle fuel consumption. Background technique [0002] According to the dynamic response characteristics of the engine, when the throttle shows a steady change, the dynamic relationship between the engine torque and the speed is close to linear, and its curve is a curve that lags behind the change of the throttle; when the throttle shows a step change, the engine output The torque increases instantaneously, and the fuel injection volume of the engine suddenly increases with the change of the throttle. Since the engine speed and the supercharging system rise steadily, it cannot keep up with the change of the fuel injection volume. Test data show that: under 100% throttle step, within about 5 seconds, the mixture in the cylinder is too rich, an...

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Problems solved by technology

[0002] According to the dynamic response characteristics of the engine, when the throttle shows a steady change, the dynamic relationship between the engine torque and the speed is close to linear, and its curve is a curve that lags behind the change of the throttle; when the throttle shows a step change, the engine output The torque increases instantaneously, and the fuel injection volume of the engine suddenly increases with the change of the throttle. Since the engine speed and the booster system rise steadily, it cannot keep up with the change of the fuel injection volume.

The test data shows that under 100% throttle step, the air mixture in the cylinder is too rich within about 5 seconds, and there are problems such as incomplete fuel combustion, increased fuel consumption and poor emissions.

[0003] During the driving process of the vehicle, such as starting, accelerating, and shifting gears, the driver often presses the accelerator pedal in order to increase the speed as soon as possible, and then releases the accelerator pedal after the vehicle reaches the expected speed. Such an operation will lead to A large amount of fuel is discharged with the exhaust gas without burning completely, which increases the fuel consumption of the vehicle; moreover, due to the instantaneous increase of engine torque, overshooting is caused by too fast acceleration, so frequent braking and deceleration is required, which increases energy waste; The operation of the accelerator should be gentle, not sudden acceleration and sudden braking

[0004] In view of this, the inventor has made in-depth research on the defect of high fuel consumption caused by bad operation of the driver in the prior art, and this case has arisen

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