ASVAB Auto and Shop Information Questions and Answers Graded A+

ASVAB Auto and Shop Information Questions and Answers Graded A+ What does the Internal Combustion engine burn? Mixture of Gas and Air (the fuel mixture) What are the 4 strokes that make up a cycle? (in car engine) 1. Intake 2. Compression 3. Power 4. Exhaust This valve opens as the connecting rod pulls the piston down, drawing the gas/air mix into the cylinder Intake The valves are closed. The connecting rod pushes the piston up, compressing gas/air mix Compression The spar plug ignites the gas/air mix, forcing the piston down. That pushes down on the connecting rod, turning the crankshaft; the crankshaft turns the flywheel, which keeps the engine going Power The ___ valve opens as the connecting rod moves the piston back up, pushing out the exploded gases. The valves are times, of course, using pus rods attached to the camshaft. Exhaust The name for cylinders that are arranged in one row Inline The name for cylinders that are arranged in two rows V Most people refer to engines as four-cycle engines but this is false; what are they really called? Four-stroke, one-cycle engine Instrument in a vehicle the measures revolutions per minute; rpm (e.g. when this displays 4,800 rpm, that means the engine is performing 4,800 cycles every minute) Tachometer What must happen in order for the cycle to happen at all? Fuel must be properly mixed with air and transported within the cylinder at the proper time ___ are used (pre 1990) to mix the fuel and air mechanically. As air moves quickly through this, it creates a vacuum, which draws more and more fuel into the mixture Carburetors ___ have replaced carburetors on newer cars to perform the air/fuel mixture function. Fuel Injectors The ___ acts as the fuel-dispensing nozzle. It injects liquid fuel