DETROIT Optimized Idle - Introduction to Optimized Idle

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INTRODUCTION TO OPTIMIZED IDLE

Optimized Idle with DDEC software reduces engine idle time by running the

engine only when required. Optimized Idle is a system which automatically stops

and restarts the engine to accomplish the following:

• Keep the engine oil temperature between factory set limits

• Keep the battery charged

• Keep the cab/sleeper or passenger area at the desired temperature (using the

optional thermostat)

Idle time and fuel savings information is available through DDEC Reports. Other

benefits include overall reduction in exhaust emissions and noise, and improved

starter and engine life (by starting a warm engine and eliminating starting aids).

The system also reduces dead batteries due to electrical loads, such as refrigerators

or satellite systems. Optimized Idle operates in one of two modes:

• Engine Mode

• Thermostat Mode (includes the same features as Engine Mode)

Engine Mode is used to keep the battery charged and the engine oil temperature

between factory set limits. The Optimized Idle Active Light is illuminated

whenever Engine Mode is active.

Thermostat Mode is used to keep the cab/sleeper (on--highway truck) and

passenger area (coach) at the desired temperature and maintain the Engine Mode

parameters. The optional thermostat must be turned ON for Thermostat Mode to be

active. The Optimized Idle Active Light is illuminated whenever Thermostat Mode

is active.

DDEC software allows the engine brakes to be turned on during shutdown. The

amount of engine braking is determined by the dash--mounted engine brake

switches. Braking during shutdown reduces cab shake.

Optimized Idle User Manual

All information subject to change without notice. 5