Engine performance Exam 1

Engine performance Exam 1 All overhead valve engines ________. - Have the overhead valves in the head An SOHC V8 engine has how many camshafts? - Two Torque is expressed in units of ________. - pound-feet Horsepower is expressed in units of ________. - foots per pound A normally aspirated automobile engine loses about ________ power per 1000 feet of altitude. - 3% One cylinder of an automotive four-stroke cycle engine completes a cycle every ________. - 720 degrees How many rotations of the crankshaft are required to complete each stroke of a four-stroke cycle engine? - one-half A rotating force is called ________. - Torque Technician A says that the crankshaft determines the stroke of an engine. Technician B says that the length of the connecting rod determines the stroke of an engine. Which technician is correct? - Tech A crankshaft Which component is NOT needed in a typical overhead cam engine? - pushrod Technician A says that a typical DOHC V6 engine uses two camshafts. Technician B says that overhead cam engines generally can run at higher rotational speeds than overhead valve engines. Which technician is correct? - Tech B overhead cam engines Which of the following is the most correct statement about the direction of engine rotation? - Most engines rotate clockwise as viewed from the front of the engine. The following statements are all correct EXCEPT ________ - Torque always results in movement Technician A says that changing connecting rod length changes engine stroke. Technician B says that changing connecting rod length changes the position of the piston in the cylinder. Which technician is correct? - Tech B Changes position on the piston All of these are correct EXCEPT ________ - Engines produce higher horsepower at higher altitude. The following statements are all correct EXCEPT ________ - Torque always results in movement. How many degrees of CRANKSHAFT rotation