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Engine braking feature  RSS feed
Forum Index » 2014+ Grand Cherokee (WK) EcoDiesel
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GreenDieselEngineering
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Joined: 10/07/2009 07:25:47
Messages: 348
Location: Southeast Michigan
The engine braking feature is a useful add-on for customers that tow often or folks that drive down mountain grades. The feature is active when the following conditions are met: in gears 1-6, above 2500 rpm (as sea level) or 2750 rpm above 6000ft. elevation, and foot off the accel pedal. While the engine braking is active the turbo vanes are closed more to create higher back pressure in the exhaust manifold. This makes it harder to push exhaust out and that force acts on the pistons to help slow the vehicle down. This helps to reduce the need for vehicle brakes and reduces wear on the brake hardware.

The feature is not active in gears 7 or 8 and does not impact operation in any normal driving situation.

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