Importance Of Cylinder Head On An Engine

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To install the cylinder head onto the engine, it is essential to design a timing drive system to link them together. The design of the timing drive assembly can not only rotate the camshafts, but also required to control the opening and closing of the valves, and the movement of the pistons. For the international combustion engine, there are two main solutions: teethed belt and chain.
The crucial function of the timing drive system is to provide drive to the engine’s camshaft(s) and a constant timing relationship to the crankshaft in order to provide the correct valve opening and closing timing required for the engine 's thermodynamic cycle. [11]

The timing relationship has to be maintained within tolerances over the engine lifetime. Failure
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When the transit timing steel cover was removed, the hands were full of engine oil. Thus there is no photos of actual timing drive system. From the website, the Ford Duratorq 2.2 litre diesel engine timing drive assembly is shown as below left, which is almost the same as the 2.0 litre timing drive assembly in this project. For a four-cylinder DOHC diesel engine, the timing drive system is primary, which consists of timing chain, two camshaft sprockets, crankshaft sprocket, tensioner guide and a hydraulic tensioner as shown below left. When the motor drives camshaft rotating, the timing chain spinning with the system. The gear box rotates along with the spinning timing chain. In the right side below, it is the part of disassemble components, the timing chain is pointed out and some bolts and screws which separated from the …show more content…
Thus, there is in general no requirement for visual check or chain replacement in service. Maintenance due to on board detection of timing error is already introduced by some OEMs; for dry belt drives, the requirements have changed significantly in recent developments with design lifetime increased due to improved belt technology from a norm of 10 up to 15 years. However, some OEMs still require planned belt replacement intervals within the design life. Ambient conditions such as the impact of belt lifetime already discussed, therefore, the maintenance requirements: for example, road conditions in India require a reduced replacement interval compared to Europe. Some OEMs specify that visual checks of the belt are needed due to aging and ambient influences.

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