In: Mechanical Engineering
A 4 cylinder 4 stroke 2.3 L diesel engine with bore = 12.4 cm
and stroke...
A 4 cylinder 4 stroke 2.3 L diesel engine with bore = 12.4 cm
and stroke =11 cm. the crank radius is 6.2 cm and with a connecting
rod length 15 cm. the compression ratio of the engine is 20 and the
combustion efficiency is 97.3 %. If the average speed of the car
over the running life of the engine is 56 km/h and the total
traveled distance of the engine is 250000 km.
note: use the engine speed as 2300 rpm whenever
needed, mechanical efficiency is 73 %, indicated work produced from
each cycle each cylinder is 1400J, and assume that the injection
started 10 degrees bTDC and ends at 25 crank angle degree aTDC.
Determine:
- The volume of the BDC.
- The amount of the fuel that didn’t burned in the combustion
chamber .
- The rate of the air flow to the engine if the volumetric
efficiency is 70 %.
- The number of the exhaust strokes that have been happened
during the engine life in one cylinder.
- Indicated mean effective pressure.
- The torque produced from the engine.
- The time duration for the injection process.
- The position of the piston at the end of the injection
period.
- The volume of the combustion chamber at the moment of the
injection process.
- If the mass floe rate of the fuel used if A/F is 19.3
kgair/kgfuel.
- The specific power of the engine.
- Based on the dimensions of the bore and the stroke, is this
engine square engine or over or under square one?