The function of the crankshaft is to translate the linear reciprocating motion of a pistons into the rotational motion required by the automobile. This is accomplished by connecting the pistons to the crank throws, which are offset from the central axis of the crankshaft to create a rotation about that axis.Know More
Each crankshaft is designed for a specific engine. Using the example of a four-stroke engine, the crankshaft has four crank throws for connecting the four pistons and is generally connected to the flywheel. During the combustion cycle of the engine, these crank throws act as a lever arm for the piston to push, thereby creating rotational motion. This is similar to pushing on the end of a wrench when turning a bolt. When the crankshaft completes its rotation, the crank throw will return the piston to the top of its cylinder.
In addition to the crank throws, the crankshaft is also comprised of carefully designed weights and balances to reduce engine vibration. Either end of the crankshaft is connected to the engine block by the crank bearings. To smooth out the power delivery of the engine between the combustion cycles of the pistons, a fly wheel is also incorporated onto the crankshaft.Learn more about Car Parts & Maintenance
A tachometer measures rotational speed in rotations per minute, and in an automobile, it measures the speed at which the crankshaft in the engine rotates. Knowing the speed of the rotation helps drivers using a manual transmission to adjust their rate of acceleration to avoid engine damage.Full Answer >
Crankcase pressure occurs when a vehicle's breather tube is obstructed, the pistons or blower oil seals are worn or defective, the piston crown is cracked, the gaskets are defective or the vehicle has excessive exhaust back pressure. Recommended crankcase pressure amounts vary depending on the type of vehicle and engine.Full Answer >
A crankshaft converts the linear energy of the pistons into rotational energy in an engine. The rotational motion then transfers through the gearbox to the wheels.Full Answer >
A boxer engine is a four-stroke engine that has its pistons move simultaneously toward and away from one another on a horizontal plane. Each pair of pistons that lie next to each other has a motion that resembles a boxer throwing his fists, hence the name of the engine.Full Answer >