Multi-Displacement System: Difference between revisions

Revision as of 21:13, 19 February 2018

Revision as of 04:45, 22 May 2018

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[[Chrysler]]'s '''Multi-Displacement System''' (MDS) is an [[automobile]] engine [[variable displacement]] technology. It debuted in 2004 on the 5.7 L [[Chrysler Hemi engine|modern Hemi]] [[V8 engine|V8]]. Like [[Mercedes-Benz]]'s [[Active Cylinder Control]], [[General Motors Corporation|General Motors]]' [[Active Fuel Management]], and [[Honda]]'s [[Variable Cylinder Management]], it deactivates four of the V8's cylinders when the throttle is not excessivly used,closed or at steady speeds, or at certain rpms, or when all eight cylinders are used.

The system was first offered only on passenger cars, since the heavy demands of trucks would interfere with its operation. However, it was recalibrated for 2006 and was offered on all seven models, including SUV's and 1500 series trucks, using the 5.7 L engine.

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In order to preserve the characteristic rumble of the V8 engines, Chrysler and Eberspaecher North America designed a special exhaust system for MDS-equipped vehicles. This includes four separate mufflers, two large central ones for V8 mode and two smaller ones near the tailpipes for four-cylinder mode. Unlike the system used on [[Mercedes-Benz]] [[V12 engine|V12]] engines, also designed by Eberspaecher, the system is mechanically passive.

It is on the 5.7 HEMI unless its manual or in manual mode with autostick, the 6.4 HEMI, and is on every trim of charger and challenger besides the hellcat and demon. It's on every HEMI in auto configuration with the exceptions of the HELLCAT 6.2 2.3 litre supercharger 16 valve HEMI V8, and the DEMON 6.2 2.9 litre supercharger 16 valve v8

Applications:

* 2005- [[Chrysler 300#2005 300/300C|Chrysler 300C]]