STUD-TAPERLOCK 3139550 - Caterpillar

1. General Remarks
Heinzmann digital governors with control unit DC 162-01, DC 302-01 and DC 402-01 constitute speed governors offering a medium range of functions.In addition to speed regulation, the following functions are available:a) Starting Fuel Flow Adjustment When setting starting fuel flow, starting minimum fuel flow or starting maximum fuel flow are available as alternatives. Furthermore, variable starting fuel flow can be provided, by which starting fuel flow is increased automatically during start-up.b) Speed Ramp For applications in which speed is not supposed to respond as fast as possible to changes of setpoint values (e.g., locomotive operation), a speed ramp is available which according to requirements may be programmed separately for increasing or decreasing speed.c) Fixed Fuel Limitation For the stop-position and the maximum fuelling position "electric catches" can be provided. This will prevent the governor's thrust from affecting the terminal stops of the injection pump, etc.d) Speed Dependent Fuel Limitation For variable speed governors, there is provided an option of programming speed dependent limit curves. Thus, for any speed, torque can be reduced as is permissible for the engine or desired by the user.e) Boost Pressure Dependent Fuel Limitation For turbocharged engines, fuelling can be reduced to achieve smokeless operation in case of missing boost pressure (e.g., starting or load change). The respective limit curves can be programmed accordingly.f) Idling and Maximum Speed Control For vehicle application, the governor can be made to operate as an idling and maximum speed controller. In addition, one fixed intermediate speed is available, e.g., for an application combining driving and stationary mode (e.g., generator at take-off). If necessary, a change-over switching of the droop can be provided, i.e., during stationary operation also droop zero is possible.g) Temperature Dependent Idling Speed For low temperatures, the engine can be run at some higher idling speed. With the engine warming up, idling speed is reduced to its normal value.h) Velocity Limitation For vehicles velocity limitations may be provided.i) Velocity Regulation For vehicles velocity regulation can be provided, by which the vehicle is made to maintain some preset velocity.j) Oil Pressure Monitoring For the purpose of oil pressure monitoring, speed/pressure dependent limit curves can be provided. If oil pressure is too low, an alarm is given; if oil pressure continues to drop, the engine is shut down.k) Load Regulation System For diesel-electric locomotive operation, a load regulation system can be provided, by which generator output is regulated in dependence on speed resp. load.l) Anti Stick Slip Device For locomotive operation, an anti stick slip device can be provided.m) Accessories Accessories such as synchronizing units, load measuring units, disturbance variable compensation units can be connected via a CAN-bus within the control unit. The CAN-bus may also be used to implement load distribution by equal fuelling (e.g., two engines on one gear).n) Output signals For speed and actuator travel, proportional signals are available in the range of 4-20 mA. They can be used for purposes of display or for further processing (e.g., switches). Furthermore, if errors occur