Electronic throttle control (ETC) is an automobile technology which electronically "connects" the accelerator pedal to the throttle, replacing a mechanical linkage. A typical ETC system consists of three major components: (i) an accelerator pedal module (ideally with two or more independent sensors), (ii) a throttle valve that can be opened and closed by an electric motor (sometimes referred to as an electric or electronic throttle body (ETB)), and (iii) a powertrain or engine control module (PCM or ECM). The ECM is a type of electronic control unit (ECU), which is an embedded system that employs software to determine the required throttle position by calculations from data measured by other sensors, including the accelerator pedal position sensors, engine speed sensor, vehicle speed senso

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  • Electronic throttle control (ETC) is an automobile technology which electronically "connects" the accelerator pedal to the throttle, replacing a mechanical linkage. A typical ETC system consists of three major components: (i) an accelerator pedal module (ideally with two or more independent sensors), (ii) a throttle valve that can be opened and closed by an electric motor (sometimes referred to as an electric or electronic throttle body (ETB)), and (iii) a powertrain or engine control module (PCM or ECM). The ECM is a type of electronic control unit (ECU), which is an embedded system that employs software to determine the required throttle position by calculations from data measured by other sensors, including the accelerator pedal position sensors, engine speed sensor, vehicle speed sensor, and cruise control switches. The electric motor is then used to open the throttle valve to the desired angle via a closed-loop control algorithm within the ECM. The benefits of electronic throttle control are largely unnoticed by most drivers because the aim is to make the vehicle power-train characteristics seamlessly consistent irrespective of prevailing conditions, such as engine temperature, altitude, and accessory loads. Electronic throttle control is also working 'behind the scenes' to dramatically improve the ease with which the driver can execute gear changes and deal with the dramatic torque changes associated with rapid accelerations and decelerations. Electronic throttle control facilitates the integration of features such as cruise control, traction control, stability control, and precrash systems and others that require torque management, since the throttle can be moved irrespective of the position of the driver's accelerator pedal. ETC provides some benefit in areas such as air-fuel ratio control, exhaust emissions and fuel consumption reduction, and also works in concert with other technologies such as gasoline direct injection. A criticism of the very early ETC implementations was that they were "overruling" driver decisions. Nowadays, the vast majority of drivers have no idea how much intervention is happening. Much of the engineering involved with drive-by-wire technologies including ETC deals with failure and fault management. Many ETC systems have redundant pedal and throttle position sensors and controller redundancy, even as complex as independent microprocessors with independently written software within a control module whose calculations are compared to check for possible errors and faults. (en)
  • El acelerador electrónico es un dispositivo que anula la conexión mecánica que existe entre el del acelerador y la mariposa del colector de admisión en los vehículos equipados con motores de gasolina. Quedando sustituida por una conexión eléctrica a través de una central electrónica, generalmente la misma que se encarga de la gestión del motor (inyección y encendido). En un diésel, es uno de los factores que determina el caudal de gasóleo. Es menos habitual de lo que se piensa, no todos los vehículos con inyección electrónica usan este sistema, aunque se hace cada vez más común. La inyección electrónica controla el momento y la cantidad de cada inyección en función de un programa y según unas variables como cantidad aire que consume o revoluciones.Aunque cada vez menos el acelerador mueve directamente la mariposa de admisión mediante un cable igual que en un carburador. En el caso de un carburador la cantidad de combustible es regulado por la succión que produce el caudal de aire. En una inyección electrónica el caudal de aire se mide con un sensor o varios (caudalímetro, sensor de presión) y el combustible se inyecta de forma que mantenga una de aire-combustible. En los diésel, sí que existe válvula de mariposa, pero su funcionamiento y posición es diferente a la de un motor gasolina. Un acelerador electrónico permite un mejor control en la alimentación de aire del motor, consiguiendo mejores aceleraciones, traduciéndose en un accionamiento más rápido que el de un sistema tradicional y una respuesta del motor más adecuada al tipo de conducción que se está realizando. Además, corrige posibles errores de accionamiento del acelerador por parte del conductor. En inglés, hay quien se refiere al sistema acelerador electrónico como «», donde «wire» se debe entender por un cable de conexión eléctrico. (es)
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  • Electronic throttle control (ETC) is an automobile technology which electronically "connects" the accelerator pedal to the throttle, replacing a mechanical linkage. A typical ETC system consists of three major components: (i) an accelerator pedal module (ideally with two or more independent sensors), (ii) a throttle valve that can be opened and closed by an electric motor (sometimes referred to as an electric or electronic throttle body (ETB)), and (iii) a powertrain or engine control module (PCM or ECM). The ECM is a type of electronic control unit (ECU), which is an embedded system that employs software to determine the required throttle position by calculations from data measured by other sensors, including the accelerator pedal position sensors, engine speed sensor, vehicle speed senso (en)
  • El acelerador electrónico es un dispositivo que anula la conexión mecánica que existe entre el del acelerador y la mariposa del colector de admisión en los vehículos equipados con motores de gasolina. Quedando sustituida por una conexión eléctrica a través de una central electrónica, generalmente la misma que se encarga de la gestión del motor (inyección y encendido). En un diésel, es uno de los factores que determina el caudal de gasóleo. En inglés, hay quien se refiere al sistema acelerador electrónico como «», donde «wire» se debe entender por un cable de conexión eléctrico. (es)
rdfs:label
  • Electronic throttle control (en)
  • Acelerador electrónico (es)
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