FREE Cummins INSITE Software: Idle Shutdown on CUMMINS Engines
Idle Shutdown
Figure 1.1 - Graphical Display (Idle Shutdown) |
#Feature Description
This feature shuts down the Engine after a period of Engine idling and no driver
activity, reducing the amount of fuel burned and increasing Engine life. Before
the shutdown occurs, a flashing lamp warns of an impending shutdown. The driver
can override shutdown by depressing the service brake, clutch, or accelerator
pedal during the warning period.
Idle Shutdown operates when the Engine is in Power Take Off (PTO) mode unless a
specific load threshold is exceeded. Idle Shutdown is automatically overridden
during cold ambient temperatures if equipped with an OEM-supplied Ambient Air Temperature Sensor.
#Adjustable Parameters
Figure 1.2 - Idle Shutdown (Enable) |
Figure 1.3 - Idle Shutdown |
▪Idle Shutdown Parking Brake - When this feature is enabled, and a Parking Brake
Switch is available, Idle Shutdown will only occur when the Parking Brake is
set.
▪Manual Override - This parameter allows a pending Idle Shutdown to
be overridden during a 30-second period prior to shutdown. To override a shutdown, the driver must activate the service brake, clutch, or
accelerator pedal during the 30-second period prior to shutdown. During this
period, a flashing warning lamp notifies the driver of the impending shutdown. If
the override is successful, the warning lamp will flash every half-second for 2
minutes. If this parameter is disabled, the operator can
still reset the Idle Shutdown timer to zero by activating the service brake,
clutch, or accelerator pedal during the 30-second warning period. When an idle
condition is detected again, the warning period restarts. Note: If an OEM-supplied Ambient Air Temperature Sensor is installed, manual override is not allowed when outside air
temperatures eliminate the need for heating or cooling.
▪Shutdown in PTO - Enables Idle Shutdown when PTO mode is engaged
and the percent loading on the Engine is below the Shutdown Percent Engine
Load threshold.
▪Shutdown Percent Engine Load - The percent Engine load threshold that is
required when in PTO mode to prevent the Engine from being shutdown. If this
threshold is not exceeded, the Engine will be shutdown. The parameter should be set low enough to prevent
unwanted idle shutdowns if the PTO governor is operated while the vehicle is
parked, but high enough to prevent defeating Engine shutdown by the PTO
feature.
▪Time Before Shutdown - The number of minutes that the Engine can idle
before it is automatically shut down. The Idle Shutdown time begins once the Engine reaches idle speed with or without PTO (or remote PTO) mode turned
on.
▪Service Brake Switch Interaction - When this feature is enabled and a Service Brake
Switch is available, Idle Shutdown is overridden when the Service Brake is
depressed.
▪Ambient Temperature Override - Check the box to enable this feature, which
serves two purposes:
→It can prevent a manual override in temperate climates when
heating and cooling are not required.
→It can perform an automatic override in cold weather, when
heating is always required.
▪Cold Ambient Air Temperature - Below this threshold, Idle Shutdown will be
automatically overridden to allow for cab heating. This parameter is available
only if Ambient Temperature Override is enabled. This value can be set between 0 and 160
Fahrenheit but must be equal to or less than the Intermediate Ambient Air
Temperature. An OEM-supplied Ambient Air Temperature Sensor is required.
▪Intermediate Ambient Air Temperature - Below this temperature, the driver can manually
override Idle Shutdown during the shutdown period. Above this temperature and
below the Hot Ambient Air Temperature, manual shutdown is disabled
because cab heating or cooling should not be required. This parameter can be set to any value between 0
and 160 Fahrenheit but must be equal to or less than the Hot Ambient Air
Temperature. This parameter is available only if Manual Override is
enabled. Also, an OEM-supplied Ambient Air Temperature Sensor is
required.
▪Hot Ambient Air Temperature - Above this temperature, the driver can manually
override Idle Shutdown during the shutdown period. This allows continued vehicle
cab cooling during high outside air temperatures. This parameter can be set to any value between 0
and 160 Fahrenheit but must be equal to or greater than the Intermediate
Ambient Air Temperature. This parameter is available only if Manual
Override is enabled. Also, an OEM-supplied Ambient Air Temperature Sensor is
required.
#Interaction with other Features and Parameters
The following interactions apply:
→Idle Shutdown can cause the Engine to shutdown in PTO if the
Shutdown Percent Engine Load threshold is not exceeded.
→Idle Shutdown must be enabled if ICON is enabled, and Ambient
Temperature Override should be disabled.
#Special Instructions
→Idle Shutdown shuts the Engine off but does not turn off power
to accessories powered by the key switch. Therefore vehicle accessories that are
left on may drain the batteries.
→The Ambient Temperature Override, Cold Ambient Air
Temperature, Intermediate Ambient Air Temperature, and Hot Ambient
Air Temperature parameters are available only if an OEM-supplied Ambient Air Temperature Sensor is used.
→With bus Engine calibrations, holding the brake pedal depressed
overrides Idle Shutdown in traffic jams until vehicle speed is sensed by the
ECM.
→Manual Override resets the idle timer. When the ECM
senses vehicle speed after an idle period, the idle timer is reset.
#Disadvantages
→Idle Shutdown cannot activate if fault code 241
is active.
→When stopped in traffic for extended periods, the Engine will be shutdown.
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