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Video Engine Management

Video Cylinder Head 1
Video Cylinder Head 2
Video Cylinder Head 3
Video Cylinder Head 4
Video Cylinder Head 5
Video Cylinder Head 6
Video Cylinder Head 7
Video Cylinder Head 8
Video Cylinder Head 9
Video Cylinder Head 10
Video Cylinder Head Repair
Video Cylinder Head Gasket

Video Exchange of Gases
Video Comb. Chamber Shape
Video Cam
Video Camshaft
Video Adjustable Camshaft 1
Video Adjustable Camshaft 2
Video Adjustable Camshaft 3
Video Cambelt
Video Cambelt (assembly)
Video Camshaft Timing Chain
Video Camshaft Timing Chain
Video Upright Shaft
Video Timing Diagram
Video Valves
Video Valve drive
Video Natrium Cooled Valve
Video Valve Spring
Video Valve Stem Guide
Video Valve Seat
Video Valve Seat Angle
Video Valve Stem Sealing
Video Valve Overlap
Video Valve Play Adjustment
Video Valve Contr. (desmo.)
Video Hydraulic Lifter
Video Operating Valves
Video Var. Valve Timing 1
Video Var. Valve Timing 2
Video Var. Valve Lift 1
Video Var. Valve Lift 2
Video Drawrod Engine

Video Engine Control 1
Video Engine Control 2


          A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Adjustable Camshaft(s) 2






Double row roller chain with adjustable camshaft for V engines

Figure 1 shows the components of the modern engine control unit of a V engine. There is first of all the double row roller chain. It features guide bars as well as clamping bars to take away any possibility for faulty or noisy movements. In the cylinder head the timing chain each drives an idler which has its effect on both camshaft sprockets. An ingenious distribution of the gear ratios limits their size and thereby the engine height. By now, the possibility to adjust at the same time intake and exhaust camshaft is accepted.

Pulse width modulation shifts oil pressure

The pictures 2 - 4 show the possible twists of intake to exhaust camshaft compared to their respective driving wheels in angle degrees in relation to the crankshaft. Possible are approx. 40 for the intake camshaft and 31 for the exhaust camshaft. By clicking you can adjust the extreme values and for the outlet side you may select intermediate values. Of course, such changes take effect just with a running engine and in exactly defined operational modes. For this, the camshaft driving wheels must be bipartite and must contain hydraulic oil, operating in the here visible five chambers against springs. The pressure circulation lubrication supplies these chambers, controlled via a paced magnetic valve (pulse width modulation). 05/07




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2001-2015 Copyright programs, texts, animations, pictures: H. Huppertz - E-Mail
Translator: Don Leslie - Email: lesdon@t-online.de

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