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How does multiple displacement system on 5.7L V8 SFI Hemi Engine work?
Wiki User
∙ 13y ago
If the Mopar system works the way others I am aware of work, it's actually quite simple. The engine computer senses when the vehicle is under a light load situation, such as steady speed highway driving, and it shuts off fuel and spark to as many as 4 cylinders. Then engine only uses the remaining cylinders to make power, using less fuel to do so. When it senses a need for more power, it will turn these cylinders 'on' again to tap the available power that the engine is capable of making. This process effectively cuts the displacement of the engine from it's full 5.7L to as little as 2.85L depending on how many cylinders it cuts out.
Through the use of solenoids and oil pressurte it also "shuts off" the lifter to those 4 cylinders
Wiki User
∙ 13y ago
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What is MDS engine mode on a dodge charger?
Multiple displacement system. The 5.7L Hemi will drop down to 4 cylinders under light load to conserve fuel.
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The Dodge Ram Hemi V8 engine operates on the 'Multi-Displacement System' developed by Chrysler. This system closes four of the V8's cylinders when the car is going at a steady speed.
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2006
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the heads. the tops of the combustion chambers of a HEMI engine has a hemispherical shape whereas in a non-HEMI engine, they are flat. for more info, read this: http://auto.howstuffworks.com/hemi1.htm The rounded concave hollow of the cylinder header allows for larger valves to be used so the engine can breath easier and produce more power over a regular motor of the same displacement.
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The Hemi IS an engine, you can't "put" a hemi on to another engine
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A hemi engine refers to one of the most popular high performance engine types.
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If you do the check engine light may come on with a code for improper oil used. If that happens the multi displacement system will be disabled. Use 5w30/5w20, whichever is correct for your model year.
How did they get the power in the 2009 5.7 hemi versus the 2004 5.7 hemi?
The newer hemi, is more powerful because it has variable valve timing. Different engine managment systems, fuel system, and camshaft design. The engine can advance the timing and retard the timing based on the demand of the driver.
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There isn't a 5.7L Hemi diesel.
