A CI engine with a 3.2-inch bore and 3.9-inch stroke operates at 1850 RPM. In each cycle fuel injection starts at 16° bTDC and lasts for 0.0019 second. Combustion starts at 8° bTDC. Due to the higher temperature, the ignition delay of any fuel injected after combustion starts is reduced by a factor of two from the original ID.
Calculate:
(a) ID of first fuel injected. [sec]
(b) ID of first fuel injected in degrees of engine rotation.
(c) Crank angle position when combustion starts on last fuel droplets injected.
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