engine parameters / alarms & warning limits

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ESD Octamatic Systems typically montitor the engine parameters shown below and are delivered with alarm and warning limits consistent with the relevant ASTM specifications. These limits are easily changeable by the customer.

 

Alarms are considered more serious than Warnings; the occurence of an Alarm requires corrective action before measurements can continue. Warnings and Alarms are displayed to the operator and must be cleared by the operator. In addition, some Alarms act as a backup to the safety systems provided by the engine manufacturer.

on-line system

ENGINE PARAMETERS
  • Oil pressure
  • Air refrigerant temperature
  • Intake air temperature
  • Mixture temperature (MON engines only)
  • Fuel refrigerant temperature
  • Oil temperature
  • Proto and product fuel temperatures
  • Knock intensity (K.I.)
  • Some optional measurements that are often specified:

  • Humidity
  • Barometric pressure
  • Oil pressure (switch)
  • Water pressure (switch)
  • Water level (switch)
  • Product pressure (switch)
  • High coolant temperature (switch)
  • Condenser temperature
ALARMS & WARNING LIMITS

The following engine condtions will trigger engine shutdown:

  • Coolant temperature over 220 degrees F.
  • Oil pressure under 20 PSI
  • Low oil pressure switch (optional)
  • Low water pressure switch (optional)
  • Low water level switch (optional)
  • QC bowl became full during blending (indicates level sensor failure)
  • Other warning conditions:

  • Excessive proto drift from previous proto measurement
  • Any temperature out of operating limits
  • Rate of change of delta O.N. too large
  • Out of fuel warning
  • Delta octane out of user-specified range
  • Product pressure low (optional)
  • Other alarm conditions:

  • Oil pressure out of operating range
  • Product O.N. out of range
  • No peak K.I. found after two attempts
  • Proto K.I. over 80 or under 20
  • Product K.I. over 99 or under 10
  • Any abnormal exit from blending screen
  •  

semi-automatic LAB SYSTEM

ENGINE PARAMETERS
  • Engine coolant temperature
  • Intake air temperature
  • Mixture temperature (MON engines only)
  • Fuel refrigerant temperature
  • Oil temperature
  • Fuel temperature
  • Knock intensity (K.I.)
  • Some optional measurements that are often specified:

  • Oil pressure
  • Humidity
  • Barometric pressure
  • Oil pressure (switch)
  • Water pressure (switch)
  • Water level (switch)
  • High coolant temperature (switch)
  • Condenser temperature
ALARMS & WARNING LIMITS

The following engine conditions will trigger engine shutdown:

  • Coolant temperature over 220 degrees F.

  • Oil pressure under 20 PSI
  • Low oil pressure switch (optional)
  • Low water pressure switch (optional)
  • Low water level switch (optional)
  • Other warning conditions:

  • Any temperature out of operating limits
  • Out of fuel warning
  • Other alarm conditions:

  • Oil pressure out of operating range
  • No peak K.I. found after two attempts
  • K.I. over 99 or under 10

Manual LAB SYSTEM

ENGINE PARAMETERS
  • Intake air temperature
  • Mixture temperature (MON engines only)
  • Knock intensity (K.I.)
  • Some optional measurements that are often specified:

  • Engine coolant temperature
  • Oil Pressure
  • Fuel refrigerant temperature
  • Oil temperature
  • Fuel temperature
  • Humidity
  • Barometric pressure
  • Oil pressure (switch)
  • Water pressure (switch)
  • Water level (switch)
  • High coolant temperature (switch)
  • Condenser temperature
ALARMS & WARNING LIMITS

The following engine conditions will trigger engine shutdown:

  • Coolant temperature over 220 degrees F. (optional)
  • Oil pressure under 20 PSI (optional)
  • Low oil pressure switch (optional)
  • Low water pressure switch (optional)
  • Low water level switch (optional)
  • Other warning conditions:

  • Any temperature out of operating limits
  • Out of fuel warning
  • Other alarm conditions:

  • Oil pressure out of operating range (optional)
  • No peak K.I. found after two attempts
  • K.I. over 99 or under 10