A six-cylinder two-stroke engine with a compression ratio = 9 produces a torque of 1100 Nm at a speed of 2100 rpm. It has a bore bof 123 mm and a stroke s of 127 mm. (a) What is the displacement volume and the clearance volume of a cylinder? (b) What is the engine bmep, brake power, and mean piston speed?

A four-cylinder engine has a 85 mm bore ? and 90 mm stroke ?, and operates at 5000 rpm.What is the power lost to piston skirt friction?

Q108 The fallowing data refers to a test ona single cylinder four stroke oil engine Cylinder bore 220mm; stroke 360mm; area of indicator diagram 360mm length af diagram 40mm; indicator Spring rating =1.25 mm/bar; Speed 300 rev/min brake load 441-3N at o.9m radius; fuel consumption 3.8 Kg/hr} Calorific Value of fuel 43124 kj/kg ; Cooling water flow 3.8kg/hrjrise intemperature of coaling water 48K;and specific heat capacity of water 4.1868 Kj|Kg.K 340d.13biliN Calculate: @ the mechanical efficiency the indicated thermal efficiencyui a The heat balance sheet expressed as ki/min andas percentage of the heat supplied to the engine.

a ull 36 ull zain IQ Asiacell 7:1A IC K/s HW9-2.jpg HW9-2 The rc (cutoff ratio) expression, which derived to form as qin * R (1+): (T, rk-1) B (Ctrl) for an air-standard Diesel cycle. D