Their job is to convert the vertical movement of the pistons into a rotation to be transferred through to the flywheel and then the transmission. The rotation of the crankshaft is then transferred through to the flywheel which sits at the end of the shaft to balance it in case of irregular engine pulses and to complete the torque conversion from the internal combustion occurring in the cylinders. This is the big reason why the V8 engine took over from an engine configuration like an in-line eight, due to its relatively small and controllable crankshaft setup that stops any unwanted flexing occurring.
They essentially start and end the engine cycle - from inlet stroke to exhaust stroke - keeping the different mechanical processes of each cycle in perfect harmony through their belted connection. Please confirm you agree to the use of tracking cookies as outlined in the Cookies Policy. Sign in or register. Michael Fernie 5 years ago. Remind me later. Share Tweet Email Whatsapp. On the crankshaft end opposite the flywheel is a pulley to which the drive belt is attached. This drive belt feeds off the movement of the crankshaft and powers various components located at the front of the engine, including the alternator which provides electric power when the vehicle is moving , the air conditioning compressor, and power steering pump, amongst other items.
A crankshaft is heavy and extremely rugged and is unlikely to break or crack unless it is submitted to the most extreme forces and pressure. However, it can happen and if it does the vehicle will not be going anywhere and may require a complete engine tear down and inspection, perhaps even an engine replacement,. These faulty parts can also lead to calamitous damage, but they can be repaired or replaced if the problem is caught early enough.
Should a crankshaft seal crack or break, oil can escape and, if left unresolved, the resultant friction and heat can bend and severely damage the crankshaft. Should it fail, the resulting increase in vibration and shaking can damage the crankshaft and other components attached to it.
The system uses this data to determine when to produce the spark to ignite the fuel and air mixture in the cylinder. In some cases, gouges or scratches in the journals can be resurfaced and larger bearings installed, compensating for the material removed from the crankshaft. As mentioned, crankshaft replacement is always a major repair. You can use AutoGuru to search and compare local, high-quality mechanics to get your crankshaft replacement booked in.
What is a crankshaft and what does it do? Updated 10 Oct Jason Unrau.
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