STRIP 1P3318 - Caterpillar

The engine uses a strategy for the cold cylinder cutout to reduce white exhaust smoke after start-up and during extended idling in cold weather.During a cold start and/or extended periods at low idle. The engines Electronic Control Module (ECM) turns off one injector at a time to determine if each cylinder is firing by monitoring the change in the delivered fuel volume. If a cylinder is firing, the ECM turns on the injector. If a cylinder is not firing, the injector is turned off. This cold cylinder cutout provides the following benefits: reduction of white smoke, improved engine starting, reduction in the use of ether injection and reduction of warmup time.Note: During operation of the cold cylinder cutout, the engine may seem to misfire. This action is normal. No corrective measures are necessary.The cold cylinder cutout is activated after all the following conditions are met:
The cold cylinder cutout is programmed to ENABLE.
The engine speed is equal to high idle or below high idle.
The delivered fuel value is less than a threshold.
The jacket water coolant temperature is below a threshold or the air inlet temperature is below a threshold.The cold cylinder cutout strategy is activated 10 seconds after the engine starts and the engine reaches idle speed. Or 3 seconds after ether injection is completed.The cold cylinder cutout is deactivated if any of the following conditions are met:
The cold cylinder cutout is disabled with the Cat® Electronic Technician (ET).
The jacket water coolant temperature rises above 63° C (145° F).
The cylinder cutout test is activated.
The coolant temperature sensor has failed.If the delivered fuel volume is greater than 275 mm (10.8 inch), the cold cylinder cutout deactivates for 3 seconds.The cold cylinder cutout will deactivate for 3 seconds when the engine speed varies by more than 50 rpm as the cold cylinder cutout begins. A new engine speed is established when the cold cylinder cutout reactivates.The cold cylinder cutout deactivates for 30 seconds when the engine speed is at low idle for 10 seconds and the engine speed falls by more than 50 rpm below low idle.Idle Cylinder Cutout (ICC)
Idle cylinder cutout is used to increase the exhaust temperatures of the engine. The idle cylinder cutout strategy turns off injection on multiple cylinders at a time. This action increases the load of the engine on the cylinders that injection is enabled on. All the injectors on the engine will be cycled on and off although this strategy is active.Conditions for enabling of Idle Cylinder Cutout:
Engine load is below the required threshold.
The difference between actual engine speed and desired engine speed is less than the required threshold.
"Idle Cylinder Cutout Enable Status" is set to "Enabled" in the service tool configurations.Integrated Crank Priming (ICP)
Integrated Crank Priming provides a means for the engine to prime the lubrication system and low-pressure fuel system by cranking the engine for an extended period prior to enabling fuel injection.Conditions for enabling Integrated Crank Priming:
Engine Pre-Lube is set to "Disabled" in the service tool configurations.Sequence of operation is as