昨晚，又上绕城高速了。

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Air Charger & Electronic Controller 7nB4(A2[S4  

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Benefits ep8UWxB5  
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Increases Power & Torque across engine rpm. %KVmpWku  
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Variable Speed System Monitors Engine Load. _'mC*7+  
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Separate Electronic Control System. 2gklGDJD  
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Improved Acceleration and Engine Response. Kv1~,j6  
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Increased Air Flow. IMdp"  
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How It Works? v/]xdP^Z  

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One popular method of increasing an engine’s performance is to cram as much air and fuel into the combustion chamber using turbochargers or supercharger. However, these mechanical devices are costly and require major modifications. Some performance cars attempt to introduce a ‘Ram Air’ system by pushing air into the engine at high speeds. !]7L9TGn  
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The Air Charger is an electrically driven Supercharger as it forces more air into the engine increasing the engine efficiency. By the allowing the engine to have access to more air easily, the engine will increase its power and torque output. The Air Charger is a variable speeds system and has a separate electronic controller to monitor the engine load and vary the blower speed to match the engine load. As it is a variable speed system, the Air Charger will provide significant torque gains even at engine speeds below 4000 rpm where most drivers spend their time. The Air Charger does not require major modifications to the air intake system. The Air Charger takes up less than 8 amps of current and will flow more than 238 CFM Cubic Feet of Air Per Minute even at 2500rpm when it detects a high engine load. 9J}^{AA  
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Volumetric Efficiency C,dRdEB>  

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The amount of air that flows into the cylinder, compared with the cylinder volume, is called the engine\'s breathing - or volumetric - efficiency. In a 3 litre six cylinder engine, each cylinder has a swept volume of 500cc. If the cylinder breathes in only 400cc on the intake stroke, the engine is said to have an 80 per cent volumetric efficiency (ie 400/500 = 0.8 or 80 per cent). Volumetric efficiency will depend on lots of factors (including how well the ports flow), but let\'s say that the VE of the example engine is in fact 80 per cent. If this 3 litre engine is revving at 6000 rpm full throttle, this means that it inhales 7200 litres of air per minute (remember, one intake stroke per two rpm), or 120 litres per second. To put it in different units, each minute this engine consumes 254 cubic feet of air. A normal 1.6cc engine requires 120 CFM of air at 6000rpm !l#n.Fx&3  
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