DDEC V SYSTEM DDEC V SYSTEM The DDEC system's engine-mounted Electronic Control Unit (ECU) includes control logic to provide overall engine management. The ECU continuously performs self-diagnostic checks and monitors other system components. System diagnostic checks are made at ignition-on and continue throughout all engine-operating modes. There is no need for a throttle delay. Emission control is performed through the ECU. The Accelerator Pedal Assembly (AP) eliminates the need for any throttle linkage. DDEC Features DDEC offers a variety of features and options designed to warn the operator of an engine malfunction.
Options can range from warning panel lights to automatic reduction in engine power followed by automatic engine shutdown. Detroit Diesel Series 60 engines equipped with DDEC are identified by the letter “V” in the sixth position of the model number. Example: 6067M V 6E. The Series 60 engine for 2004 is equipped with DDEC V. The DDEC engine is equipped with an electronically controlled fuel injection system. There are no control racks or mechanical linkages to adjust. This system improves fuel economy and vehicle performance. It also helps to reduce cold starting time and increase initial idle speed for fast engine warm-up and virtual elimination of cold smoke.
DDEC has the ability to perform diagnostics for self-checks and continuous monitoring of other system components. Depending on the application, DDEC can monitor oil temperature, coolant temperature, oil pressure, fuel pressure, coolant level and remote sensors (if used). DDEC connects to theAmber Warning Lamp (AWL) and the Red Stop Lamp (RSL) to provide a visual warning of a system malfunction. The DDEC engine has no mechanical governor. Engine horsepower, torque, idle, and engine speed are contained in the internal electronics. Therefore, there are no mechanical governor spring adjustments for idle and high-speed control. 22 All information subject to change without notice.
DDC-SVC-MAN-0039 Copyright © 2009 DETROIT DIESEL CORPORATION