ENG 121 - Control System Mindelling simulation and control of a Diesel engine by using smulins A four stroke four cylinder Diesel engine is going to be simulated by using the first order ordinary differential equation below. 60 .- Wis the engine rotational velocity froml, I, and q are engine and load torques respectively and I b the engine moment of inertia. Engine torque is found by where H.my W. OW ex - 4 (number of cylinders) W. is the displacement volume of the engine, Are Is the mean effective pressure, pw is the mean fuel pressure Do, is mean friction pressure, myis the mass of the fuel in a cylinder during a cycle and H, is the fuel calorific valve v is taken 1 for ten stroke engines and 2 for four stroke engines. W, is the mass flow of the fuel. The initial condition of the engine rotational velocity is 1500 rpm. V. = 0.0016 m' , 4 - 0.2715 kum', e = 0.38 and Aw -100 1Pa Omo a block diagram of the model with W, and r, as the inputs and N and r, as the output Simulate the Diesel engine performance o for acceslast lood torque of 85 Nes and a smoothly increasing mass flow of the fuel. a for a smoothly increasing torque (from 70 Nim to 100 Nm in 10 wrong) and constant mais flow of the fuel hint: use the "Ramp" block of Simslink for s, I. Control Design a PO controller to control the engine rotational velocity by using the mass flow of the fuel as the Input variable to the system. Simulate the controller performance for a constant load torque of 85 Nm and make the engine rotational velocity reach 2000rpm. Show and comment on the results by plotting -, grohe for each simulation it time). Thist use "Click"and "To Workpice" blech of Smallek and "pier"menned of Mariah|