Sunday, June 28, 2020

Automobile technology is increasingly updated, electronic control throttle maintenance is also important

The new type of electronically controlled throttle replaces the traditional thin steel wire with a wire. The throttle position detection device sends the throttle position signal to the ECU through the wire, and then the ECU determines the size of the throttle opening and closing. This new design The main purpose is that the ECU can determine the parameters of the intake valve and some related components according to the driving behavior, so that the car is in an optimized state during driving, but its shortcomings will be slower than the traditional pull-throttle response. Mainly due to the delay time of the ECU receiving the signal of the electronic throttle and then outputting it to the throttle.

Characteristics of electronic throttle

In the electronically controlled throttle models, when the ECU controls the throttle, it will analyze the depth of the accelerator pedal and the vehicle condition, and finally calculate the current appropriate throttle opening. When the driver starts to accelerate suddenly (press the pedal to the end), the ECU analyzes according to the current vehicle speed, throttle size, etc. From the perspective of fuel economy and reasonable emissions, it will appropriately limit the opening range of the throttle and control the injection The oil system limits the fuel injection nozzle for optimized fuel injection. Doing so makes the driver feel that there is obviously a delay time after the accelerator pedal is pressed before the car starts to exert force. This is the so-called throttle lag. Therefore, the throttle lag is actually formed by the ECU by limiting the instantaneous power output of the internal combustion engine. Of course, this also brings benefits-saving fuel and protecting the environment.

However, the electronic throttle is not used to limit the power output of the internal combustion engine.When the car runs, if you quickly press/release the accelerator pedal 1/3 depth, you can feel the car's obvious fueling/receiving. The effect is almost equivalent to fully depressing/releasing the accelerator. What is going on? This is the case of ECU assisting the driver to speed up/decelerate quickly according to the current vehicle conditions. Therefore, when the electronic accelerator model is running, the ECU will indicate that the driver has reached the desired acceleration/deceleration operation according to the vehicle condition, making it easier for the driver to operate the accelerator pedal.

The traditional pull-throttle throttle uses a thin steel wire to directly connect the accelerator pedal to the throttle valve. The stepping depth of the accelerator pedal directly corresponds to the opening and closing size of the throttle valve. It is characterized by a simple system and direct control. The throttle pedal and the throttle valve opening degree It is roughly 1:1.

The new type of electronically controlled throttle replaces the traditional thin steel wire with a wire. The throttle position detection device sends the throttle position signal to the ECU through the wire, and then the ECU determines the size of the throttle opening and closing. This new design The main purpose is that the ECU can determine the parameters of the intake valve and some related components according to the driving behavior, so that the car is in an optimized state during driving, but its shortcomings will be slower than the traditional pull-throttle response. Mainly due to the delay time of the ECU receiving the signal of the electronic throttle and then outputting it to the throttle.

Characteristics of electronic throttle

In the electronically controlled throttle models, when the ECU controls the throttle, it will analyze the depth of the accelerator pedal and the vehicle condition, and finally calculate the current appropriate throttle opening. When the driver starts to accelerate suddenly (press the pedal to the end), the ECU analyzes according to the current vehicle speed, throttle size, etc. From the perspective of fuel economy and reasonable emissions, it will appropriately limit the opening range of the throttle and control the injection The oil system limits the fuel injection nozzle for optimized fuel injection. Doing so makes the driver feel that there is obviously a delay time after the accelerator pedal is pressed before the car starts to exert force. This is the so-called throttle lag. Therefore, the throttle lag is actually formed by the ECU by limiting the instantaneous power output of the internal combustion engine. Of course, this also brings benefits-saving fuel and protecting the environment.

However, the electronic throttle is not used to limit the power output of the internal combustion engine.When the car runs, if you quickly press/release the accelerator pedal 1/3 depth, you can feel the car's obvious fueling/receiving. The effect is almost equivalent to fully depressing/releasing the accelerator. What is going on? This is the case of ECU assisting the driver to speed up/decelerate quickly according to the current vehicle conditions. Therefore, when the electronic accelerator model is running, the ECU will indicate that the driver has reached the desired acceleration/deceleration operation according to the vehicle condition, making it easier for the driver to operate the accelerator pedal.

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