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)

▪Idle Shutdown - Select the feature name to enable or disable the feature using the dropdown list in the ECM Value column.

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.

Read More:

Advanced ECM Data on Cummins INSITE Software (CUMMINS Engines)

Graphical Monitoring on Cummins INSITE Software (CUMMINS Engines)

Blog.Teknisi

Subscribe to receive free email updates: