Heitz Automotive Testing LLC |
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Operation
A configuration file selects the feedback to be used (actuator travel, actuator force, deceleration, line pressure). With the vehicle stopped and idling, the driver pulls back the pickle stick to the frame, then switches ON the energize switch. This energizes the brake power amplifier and momentarily resets the actuator travel encoder, setting the “zero” position. The Radio Switch, or the pickle switch, or the tray front panel switch can start a program. The radio and pickle switches are momentary. Press any switch to start, and press any switch to stop. The front panel Start switch can be configured to be momentary or on/off. |
Adaptability with Earlier Actuators
The Heitz-designed geared ball screw actuator used in earlier brake servo actuators can be used unchanged in System 4. Brake Performance Performance specifications depend on the motor used and the gear ratio used. Please see the specifications table below. |
with 23E Motor | with 23G Motor | with 28E Motor | |
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Maximum Force 1,3 | 325 lb (1445 N) | 400 lb (1770 N) | 600 lb (2670 N) |
No load speed 1 | 60 in/s (1520 mm/s) | 37.5 in/s (950 mm/s) | 33 in/s (838 mm/s) |
Speed at 1000 N load 1 | 38 in/s (960 mm/s) | 25 in/s (635 mm/s) | 29 in/s (736 mm/s) |
Stroke 2 | 7 inches (178 mm) or 5.5 inches ( 140 mm) | 7 inches (178 mm) or 5.5 inches ( 140 mm) | 7 inches (178 mm) or 5.5 inches ( 140 mm) |
Retracted length (stroke dependent) | 16.5 inches (419 mm) or 15 inches (381 mm) | 16.5 inches (419 mm) or 15 inches (381 mm) | 16.5 inches (419 mm) or 15 inches (381 mm) |
Installed weight (actuator + seat frame) | 14.5 lb (6.6 kg) | 14.5 lb (6.6 kg) | 15.5 lb (7.0 kg) |