Engine Brake Controls - Series - Detroit Diesel DDEC VI Application And Installation

5.7 ENGINE BRAKE CONTROLS – SERIES 60
The Engine Brake option converts a power-producing diesel engine into a power-absorbing air
compressor. This is accomplished by opening the cylinder exhaust valves near the top of the
normal compression stroke and releasing the compressed cylinder charge to exhaust. The release
of the compressed air to atmospheric pressure prevents the return of energy to the engine piston
on the expansion stroke, the effect being a net energy loss. Fueling is cut off when this occurs.
5.7.1 OPERATION
A dash mounted On/Off Switch is used to enable the Engine Brake option. DDEC VI will directly
control the engine brake solenoids and turbocharger VGT position to produce the desired low,
medium, or high braking power. This braking power is based on the driver selected intensity
switch for a Series 60 engine.
The following conditions must be met for engine brakes to be activated:
□ Percent throttle <4%
□ Driveline open – engine speed >1100 rpm
□ Driveline closed – engine speed >800 rpm
□ Road Speed > 0 mph (programmable)
□ ABS not active
□ Clutch pedal released (if equipped)
□ Engine not fueling
□ Engine not in PTO mode
□ Torque converter in lockup (automatic transmission)
The following are features and options for Engine Brake:
□ Cruise Control or Road Speed Limit with Engine Brake
□ Engine Brake Disable
□ Engine Brake Active
□ Engine Fan Braking
□ Clutch Released Input
□ Service Brake Control of Engine Brakes
□ Min. MPH for Engine Brakes
Service Brake Control of Engine Brakes
This option allows the engine brakes switches to be ON but not engage the engine brakes until
the service brake is pressed.
All information subject to change without notice. (Rev. 01/07)
7SA827 0701 Copyright © 2007 DETROIT DIESEL CORPORATION
DDEC VI ELECTRONIC CONTROLS APPLICATION AND INSTALLATION
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