Kenya Speed Limiter With GPS GPRS Functions For Trucks Forklifts China Speed governor Ethiopia

4 The Mechanical Actuator

For the Electronic throttle ( EFI ) vehicles , no need add mechanical actuator, the limiter will simulate the voltage value of the vehicle throttle sensor, when the vehicle is over speed, The limiter will give ECU a idle voltage value, ECU will control the throttle according to this voltage value. When the vehicle is in normal driving state(not over speed), the speed limiter will not interfere the vehicle speed. The throttle sensor will give ECU normal driving voltage, let the vehicle keeping normal driving.

5 The Electronic throttle ( EFI ) Vehicle Speed Limiter Installation Steps

Specific Installation Steps:

(Take the truck speed limiter installation as an example)

①　Take apart the protective shell which is beneath vehicle steering wheel, open the dashboard with tools, the speed limiter will be placed in this steering room.

②　Find the vehicle accelerator pedal wires harness at first ,then find the two signal wires from the wires with multimeter test.

There are six wires in the accelerator pedal interface , two power wires ,two ground wires, and two signal wires. Start the vehicle, step on the accelerator pedal, let the vehicle in idle state, then the signal wire voltage value will change, thus you can find the signal wires.

After find the signal wires, please record the voltage value and make marks on the two wires , It will be convenient with the next step.

(Generally, the voltage value of the accelerator pedal signal wires is about 2 times of the other wire, and the low voltage is about 0.4V, and the high voltage is about 0.7V.)

③　Next, we set the voltage value of the brown wire and the white wire of the speed limiter to the value what we test from the vehicle accelerator pedal signal wire.

How to adjust the voltage value? At first, make the speed limiter power on, then take off the case cover of the speed limiter, slide the switch on the PCBA board to the "close" end, then we use the multimeter to measure the voltage value of the brown wire and the white wire. After adjusting the voltage, we need slide the switch back to the "broke" end.

We can find two adjusting knobs on the PCBA board. We take a screwdriver insert into the small knobs, screw it, then we can adjust the voltage of this two wires.