‰  NOW 20 WPM  ‰  TEXT IS FROM MAY 2015 QST  PAGE 35 ‰

CAPACITY RC.  THESE MEASUREMENTS ASSURE THE BATTERY HAS ENOUGH RESERVES TO
RESTART THE ENGINE WHEN THE TRAFFIC LIGHT TURNS GREEN.  ALL OF THIS
OPERATION IS UNDER THE CONTROL OF A BATTERY MONITORING SYSTEM BMS.  IT MAY
BE PART OF THE ENGINE CPU, BUT IT MAY INDEED BE A STANDALONE CPU
INTERCONNECTED VIA A DATA BUS SYSTEM.  DURING ENGINE SHUTDOWN, ELECTRIC
MOTORS ENSURE THAT POWER BRAKES, HVAC, TRANSMISSION SERVO PRESSURE, AND THE
ENGINE COOLING SYSTEM CONTINUE TO OPERATE.  TO ENSURE THAT THESE
ACCESSORIES HAVE A CONSTANT VOLTAGE SOURCE, MOST EIS SYSTEMS USE A DC TO DC
CONVERTOR.  TO PROVIDE POWER TO THE CONVERTOR, A SECOND TRUNK MOUNTED AGM
ABSORBENT GLASS MAT BATTERY MIGHT BE USED.  AT LEAST ONE AUTOMOBILE MODEL
USES A DUAL LAYER SUPER CAPACITOR WHICH IS CHARGED DURING DECELERATION AS A
‰  END OF 20 WPM TEXT  ‰  QST DE W1AW  ƒ