Problem 2: A mechanical engineering graduate from ODU was just recruited into the engine design group of a world famous

[answerhappygod]

Problem 2 A Mechanical Engineering Graduate From Odu Was Just Recruited Into The Engine Design Group Of A World Famous 1 (46.37 KiB) Viewed 37 times

Problem 2: A mechanical engineering graduate from ODU was just recruited into the engine design group of a world famous motorcycle company. The first design task taken up by the engineer was to calculate the kinematic parameters of the piston engine as a function of the maximum road speed of the motorcycle. The piston engine is based on the simple Slider Crank mechanism least in the Mechanisms Course (See the zoom-in view of the engine in the figure below). The design variables are as follows: 1) Maximum road speed of the bike Vs-111.76 m/s (250 miles per hour) 2) Rear wheel radius R. -0,254 m (10 inch) 3) Overall gear ratio between wheel shaft and crank-shaft of the engine at top-gear G-2 4) Crank length OC-10 cm 5) Connecting rod (Coupler) length PC-15 cm ACH S a) Apply the graphical method of Velocity analysis to find the upward velocity of the piston when the crank angle a is 45°. Assume that the rotation of the crank wheel is CCW (Hints: Angular velocity of crank wheel shaft -(V x G)/ R. Find AC length, and use the dimensions of triangle PAC to find angle made by PC, then find B. Find the direction of the velocity vectors. Now you should be ready to apply the graphical procedure and find piston velocity. If you get the numbers correctly, a scale of 1 cm-10 m's should work) b) From the graphical result, also find the anglar velocity of the connecting rod (coupler) PC c) Convert the angular velocity of crank shaft from radians per second to nevolutions per minute (rpm) Do you think this is a realistic spin for a motorcycle Note: Preferably solve this problem on a graph sheet, but it is not needed if you are able to do it on a white sheet