A four-cylinder, spark-ignition, four-stroke engine has the next characteristics:

Piston diameter: 78 mm. Crank length: 42 mm. Connecting rod-crank ratio: 3.98. Piston mass: 355 g.

Determine: a) the length of the connecting rod, b) the speed and acceleration of the piston if the engine operates at 500, 1500, 3000 and 5000 rpm, c) The compression ratio of the engine. d) the maximum force exerted on the connecting rod, as well as the angle at which it occurs. e) the thermodynamic work of the cycle and its efficiency. f) The amount of energy supplied to the engine as heat. g) The theoretical maximum temperature of the cycle, if the engine operates as an otto cycle with standard air at 30C and 89kPa and the exhaust gases are at 650K. h) represent the evolution of pressure, temperature and torque (momentum) as a function of the angle