Electronic throttle (ETC), also known as electronic drive. Unfortunately, the signal delay of the electronic throttle will inhibit the normal acceleration of the vehicle. In some cases, such as when climbing up, there is a strong sense of illusion, and even the sudden suddenness of the vehicle.
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The Wind Booster electronic throttle accelerator solves the hysteresis problem of electronic throttle (ETC). The speed of the vehicle equipped with Wind Booster will be more brisk and more fun to drive.
1. Electronic throttle and pull throttle principle
Due to various reasons such as environmental protection, economy, reliability, etc., the newer models nowadays generally use electronic throttle. The so-called electronic throttle is for the previous pull throttle. The traditional pull throttle uses the thin steel rope to directly connect the accelerator pedal. The throttles are connected. The depression of the accelerator pedal directly corresponds to the opening and closing of the throttle. The electronic throttle has no cable. By installing a potentiometer (variable resistor) in the pedal, the depth of the accelerator pedal is converted into the resistance of the resistor. The electronic system of the car indirectly determines the depth of the accelerator pedal by sampling the resistance value. Finally, the stepping motor is driven by the ECU to control the opening degree of the throttle valve. It is not difficult to find through the principle that the throttle throttle is characterized by simple system and direct control. The accelerator pedal and the throttle are open at 1:1; while the electronic throttle is characterized by the accelerator pedal only characterizing the driver's operational intention, and the final throttle control is given to the ECU.
2. Characteristics of ECU control throttle in electronic throttle models
In the electronic throttle model, when the ECU controls the throttle, the throttle depth is combined with the vehicle condition for analysis, and the current appropriate throttle opening is calculated. When the driver suddenly accelerates when starting (the pedal is stepped on to the bottom), the ECU analyzes according to the current speed and throttle size. From the perspective of fuel economy and reasonable emissions, the opening range of the throttle valve is appropriately restricted, and the spray is controlled. The oil system limits the injector to maximize fuel injection. This makes the driver feel that there is obviously a delay after the throttle is depressed, and the driver starts to exert force. This is called throttle lag. Therefore, the throttle hysteresis is actually formed by the ECU limiting the instantaneous power output of the engine. Of course, this also brings benefits - saving fuel and protecting the environment.
However, the electronic throttle is not used to limit the engine's power output. When the car is running, if you quickly step on/release the throttle pedal 1/3 depth, you can feel the obvious fueling/recharging of the car. It's almost equivalent to completely depressing/releasing the throttle. What's going on? This is how the ECU assists the driver in speeding up/decelerating the case based on current conditions. Therefore, when the electronic throttle model is running, the ECU will help the driver to achieve the desired acceleration/deceleration operation according to the vehicle condition, making it easier for the driver to operate the accelerator pedal. (Edit: chiying)
The principle of Wind Booster
Simply put, Wind Booster was born to alleviate the throttle lag. According to the characteristics of the electronic throttle, Wind Booster will have the following advantages:
(1) Accelerate the throttle opening to improve the static response
Wind Booster's "acceleration" is mainly achieved by increasing the sensitivity of the throttle response. When the system finds that the driver has the willingness to accelerate, it will open the throttle as fast as possible through the circuit, thus increasing the sensitivity of the throttle response. However, Wind Booster does not reduce the leveling of the accelerator pedal signal as many people have said. In fact, the accelerator pedal signal is still steplessly adjusted.
(2) Amplify the throttle signal to increase the speed and improve the dynamic response
When the accelerator pedal is depressed, the accelerator will calculate the rate of change of the throttle signal according to the magnitude and time of the depression. The faster the change, the stronger the acceleration requirement, Wind Booster will increase the rate of change, and the final effect is to speed up the dynamics. The response is better.
(3) Provide false driving style for ECU to adjust engine parameters
Modern engine ECUs generally have driving style adaptability. If the driver often quickly steps on the throttle (commonly known as pulling speed), the ECU will gradually think that the driver's style tends to be “violentâ€, so the engine will slowly adjust the throttle and fuel injection. The system waits to get the best adjustment parameters for the engine in this style. After using Wind Booster for a long time, even if you drive according to the previous "moderate" driving style, the engine will still get a "fierce" driving experience, which is equivalent to deceiving the ECU. Over time, the engine will automatically modify its parameters to suit the style. .
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