assembly 200 and reduces the pressure to meet the requirement of the existing hydraulic power steering systems if installed in target chassis the constant power source module illustrated in fig4 utilizes a mechanical internal combustion engine to provide the constant power the engine is started by placing the mode switch 43 a amp b in the u201c start u201d position the power storage module will then apply power to the helper motor generator 40 shunt field via cable 126 at the same time power is applied to the field present relay 42 via cable 127 the field present relay 42 accomplishes the critical function of preventing power to be applied to the helper motor generator 40 armature with out a magnetic field present when the field present relay senses a field is present it allows power to the armature contactor 41 via cable 137 the armature contactor will energize allowing power provided by the power storage module via cable 138 to the helper motor generator 40 armature via cable 136 the helper motor generator 40 will now turn over the combustion engine 36 until it starts upon starting the combustion engine 36 will increase in speed until helper motor generator 40 becomes a generator and provides a voltage that is approximately 15 higher than the normal battery bank voltage at that time the helper motor generator 40 will provide charging power to the power storage system via cable 136 armature contactor 41 and cable 138 a sample of the generated voltage will be provided to the voltage regulator 39 via cable 136 when the.