Throttle control actuator

Types of Throttle Control Actuators

Throttle control actuators are devices that control the flow of air to the engine. There are two main types of throttle control actuators: electrohydraulic throttle control actuators and electromagnetic throttle control actuators.

• Electrohydraulic throttle control actuator:

As the name suggests, the electrohydraulic actuator works on electrohydraulic principles. Therefore, it consists of a hydraulic pump and a hydraulic cylinder. The hydraulic pump receives electric signals from the ECU, which acts as the commanding authority. Based on the signals it receives, the hydraulic pump will start working and release hydraulic fluid to the hydraulic cylinder. When the hydraulic cylinder expands, the throttle valve will open up.

The opening and closing of the throttle valve regulate and control the air that enters the engine. Since this kind of actuator relies heavily on hydraulic systems, it is not widely used in cars.

• Electromagnetic throttle control actuator:

The electromagnetic throttle actuator works on electromagnetic principles. It comprises a DC motor and gearbox, which are responsible for the opening and closing of the throttle plate. The DC motor receives signals from the vehicle's ECU on how much air should enter the engine. The gearbox regulates the throttle valve's movement by smoothly and precisely opening and closing the valve.

This type of throttle actuator is common in modern vehicles. It is very precise and provides a perfect fit for the car's engine control system. They are usually small-sized and lightweight. Hence, they promote fuel efficiency in vehicles.

Specification and Maintenance of Throttle Control Actuators

Throttle control actuator specifications may vary depending on the vehicle model. Here are some general specifications.

• Size

  The dimensions of the throttle actuator generally vary depending on the type. Generally, the linear type measures about 65x50x50 mm, and the rotary type measures around 70x70x60 mm.

• Weight

  Typically, the throttle control actuator weight ranges from 100 to 400 grams, depending on the type and build materials. Vehicles with large cad capacities and complex designs often use heavier actuators.

• Connection

  The throttle actuator has connectors for electrical and mechanical cables. The electrical connector includes a pin or socket, while the mechanical cable has a housing and end link.

• Voltage

  Most vehicles use a 12-volt throttle actuator. However, heavy vehicles like trucks and some buses may use 24-volt systems.

Cars with an actuator throttle need regular vehicle maintenance. If the vehicle manufacturer advises replacing the throttle actuator, the car owner should follow the advice. In most cases, the actuator can last as long as the vehicle. However, neglecting to clean the throttle body can damage the actuator and the entire throttle system.

During vehicle maintenance, the mechanic should inspect the wiring harness. The wiring harness should not have any damages or loose connections. A damaged harness can cause a poor throttle response. Additionally, the throttle body should be cleaned to get rid of carbon buildup and dirt.

If there is a throttle actuator failure or a problem with the wiring harness, the mechanic should thoroughly inspect the entire throttle system. Many vehicle manufacturers have specific guidelines on how to replace a throttle actuator. It is important to follow the guidelines to prevent damage to the entire throttle system.

Scenarios of throttle control actuators

• Automotive Industry

  Throttle control actuators are widely used in cars, trucks, and other vehicles' automotive industries. They play a key role in implementing drive-by-wire systems, controlling engine power output, and ensuring vehicle stability and safety.

• Motorcycles and Bicycles

  Motorcycles and electric bicycles also use throttle control actuators to control the acceleration and speed of the vehicle. Especially in electric bicycles, throttle control actuators can realize precise speed regulation functions to provide a better riding experience for users.

• Industrial Machinery

  Industrial machinery such as forklifts, tractors, and excavators also use throttle control actuators. They are responsible for controlling the engine's output power and rotation, which provides driving power and support for these machines.

• Aerospace Fields

  The aerospace domain also uses throttle control actuators. For instance, aircrafts utilize these components to control the engine's thrust in order to ensure that the aircraft can take off, fly, and land normally. Throttle control actuators in the aerospace field usually possess a more robust design and higher precision to meet the requirements for safety and reliability in aviation.

• Throttling in Engines

  Engines of various vehicles and machinery also use throttle control actuators. They is responsible for controlling the opening and closing of the throttle valves, which regulate the amount of air intake and combustion in the engine, thereby affecting the power and speed of the engine.

• Robotics

  In the field of robotics, throttle control actuators are also widely used. For example, robots such as service robots, handling robots, and factory automation equipment need to use these components to control the motion and operating power, thereby realizing various functional applications.

• New Energy Vehicles

  Throttle control actuators play a crucial role in new energy vehicles such as electric cars and hydrogen fuel vehicles. They control the vehicle's acceleration and driving power by regulating the power output of the vehicle's electric motor or engine.

• Smart Vehicles

  Vehicle systems are becoming more intelligent, and functions such as adaptive cruise control and automatic driving require precise control of vehicle speed and acceleration, which also relies on the role of throttle control actuators.

How to Choose a Throttle Control Actuator

Although all Throttle control actuators have the same purpose, there are some things that business buyers need to consider when purchasing truck throttle control actuators for their customers.

• Vehicle Compatibility:

  The throttle actuator must be able to fit onto the vehicle’s engine to control its throttle. Therefore, vehicle compatibility is an important factor that needs to be considered. When buying throttle actuators in bulk, buyers should ensure that the actuators they are buying will fit and work with specific customer vehicles. Alternatively, they should get throttle actuators for a variety of different vehicles to appeal to a larger customer base.

• Quality and Reliability:

  Customers want parts that will last for a long and constant use. Therefore, when buying throttle control actuators, buyers should get quality and reliable products. To ensure the actuators are of good quality, buyers can read reviews and ratings from other buyers. They should also look for well-known brands that are trusted and reputable.

• Warranty and Support:

  A warranty is an important thing to look for when buying throttle actuators. The warranty will ensure the customers are covered in case the actuator develops a fault. Warranties indicate the manufacturer’s confidence in their product. Therefore, buyers should get throttle control actuators with a warranty. They should also stock up on products from suppliers who offer great customer support.

Throttle control actuator Q & A

Q1. What are the types of throttle control actuators?

A1. The throttle actuators can be divided into three types: AC motor, stepper motor, and DC motor throttle actuators.

Q2. How to test the throttle actuator?

A2. Firstly, check the electrical connector of the throttle actuator. Next, do a visual inspection of the throttle body plate. After that, make a scan tool to retrieve data. Finally, check the throttle actuator voltage by back-probing the throttle position sensor.

Q3. What happens when the throttle actuator is faulty?

A3. If the throttle actuator is faulty, it may cause the vehicle to have poor acceleration, a fluctuating idle, or a whistling sound from the engine. It may also trigger the check engine light.

Q4. Can the throttle actuator be repaired?

A4. Usually, the throttle actuator cannot be repaired since it is a complex electronics and manufacturing process. Moreover, there are no documented records of successful repairs detailing the methods used, the efficacy of the repairs, or the longevity of the actuator after repair.