A two stroke Diesel engine has six cylinders in-line. The firing order is 145236. The cylinders are pitched 1.5 m apart except cylinders 3 and 4 which are 1.8 m apart. The reciprocating and revolving mass per cylinder are 2.2 and 1.6 tons respectively. The crank length is 375 mm, the connecting rod length is 1.6 m and the speed is 120 rpm. Determine:- (a) minimum and maximum values of primary couple and (b) maximum values of secondary couple and angular position relative to crank 1.
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theory of machines
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The straight-six engine (also referred to as an inline-six engine; abbreviated I6 or L6) is an internal combustion engine, with six cylinders mounted in a straight line along the crankcase with all the pistons driving a common crankshaft (straight engine).
The bank of cylinders may be oriented at any angle, and where the bank is inclined away from the vertical, the engine is sometimes called a slant-six (although this is also a Chrysler-specific design). The straight-six layout is the simplest engine layout that possesses both primary and secondary mechanical engine balance, resulting in much less vibration than engines with fewer cylinders.
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