Heitz Automotive Testing LLC
609.466.2071
  • Home
  • Who We Are
  • Manufacturing Division
    • Heitz System 4
    • Steering>
      • Steering Machines
      • NEW Open Center Machines
    • Brakes
    • Throttle
    • Repair & Calibration
  • Testing Division
    • Roadholding>
      • Roadholding Tests
      • Instrumentation
      • Specialized Test Equipment
      • Data Recording
    • Chassis Lab Services
  • Reports & Documentation
  • Contact Us

Throttle

Throttle Actuator
The throttle actuator is a linear-acting unit, using a 6 mm ball screw.

The actuator attaches between the brake system seat frame and the accelerator pedal.

Stall force is over 100 pounds (450N), and no-load speed is over 70 inches/sec (1778 mm/s).

In use, the actuator puts out over 40 pounds (178 N) pedal force at 50 inches/sec (1270 mm/s).

The throttle servo can be used alone with its own internal program, but it is more usually controlled by brake or steer programs.  For example, the brake DAC sends a signal through the rear connector BTC (brake-throttle command) pin to the throttle A/D converter.

In ISO 9816 (power off reactions of vehicle in a turn) testing, the steer program holds initial conditions for three seconds, then sends a DT (drop throttle) command to the throttle servo.  In the ISO braking in a turn test, the steer program drops throttle and controls braking simultaneously.  In other tests, throttle or speed is held constant during the test.


Powered by Create your own unique website with customizable templates.