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A car engine has a limited range of revolutions that it can achieve. In normal operation this is from around 800 revolutions per minute to 7,000 revolutions per minute. Any higher than this and the engine would suffer damage. So one reason for using a gearbox is to allow the engine to continue transferring power to the wheels over all speeds.
Secondly consider this:
If the engine were set to make the car move at 70 MPH then the amount of torque required to make the car move from a standstill would be greater than the amount of power the car could produce to move the car forward. Moving from a standing start would stall the engine. So its true to say that the gearbox sacrifices speed for torque.
To do this, the gearbox changes the ratio of the engine speed and the wheels. Starting in a low gear the engine spins more revolutions to get one spin of the wheels. In a high gear the ratio of the engine revs to the wheel revs in closer to or above unity.
Cars can have fitted either a manually selected gear box, a semiautomatic or fully automatic gearbox. In a manual select car the ratio is selected via a gear stick and the selections is by the driver. In a semi-select car the clutch is automatic but the gear selection is manual. In a fully automatic the clutch and the gearbox selection is either by a mechanical system or in the case of newer cars via a small computer.
What else can I help you with?
Why is a gearbox fitted to a car?
HGJH
State the three shafts in a gearbox fitted to a front engine rear wheel drive vehicle. State the function of each shaft.?
In a gearbox fitted to a front-engine, rear-wheel-drive vehicle, the three shafts are the input shaft, output shaft, and countershaft. The input shaft transmits power from the engine to the gearbox, enabling the transfer of engine torque. The countershaft, which is connected to the gears, facilitates the gear changes and allows for varying torque and speed outputs. Finally, the output shaft delivers the power from the gearbox to the rear wheels, driving the vehicle forward.
Where is speedo fitted onto gearbox of 1998 vectra diesel?
In a 1998 Vauxhall Vectra diesel, the speedometer is typically fitted to the gearbox via a speed sensor located on the transmission. This sensor measures the rotational speed of the output shaft and sends signals to the vehicle's instrument cluster to display the speed. You can usually find it on the side of the gearbox, near the differential area. If you're looking to replace or inspect it, ensure you check the specific model and gearbox type, as there may be slight variations.
Can a 6 speed gearbox be fitted to a 4 speed citroen C5?
Yes, a 6-speed gearbox can potentially be fitted to a 4-speed Citroën C5, but it would require significant modifications. This includes ensuring compatibility with the engine, transmission mounts, and the vehicle's electronics. It's advisable to consult with a professional mechanic or automotive specialist for feasibility, as it may also affect performance and warranty.
What are three shafts in a gearbox fitted to a front engine rear wheel drive vehicle?
Could be a PTO (Power Take Off) to operate accessories like a dump body or a snow plow.
Can a 1.6 saxo engine fit a 1.1 106 gearbox?
Yes, the VTR does, not sure if all years do, but my 2001 1.1 gearbox fitted onto my 2003 VTR :)
Does a vehicle engine have a constant speed?
No, that is why there is a gearbox
How do you fit a saxo gearbox?
assuming the old ones aready out,get the car in the air,lift the new gearbox in and wiggle it into place,then do up all the bell housing bolts.gearbox fitted!
What does it mean when gearbox fault light comes on?
when gearbox fault light comes on, it means there is a problem with the gearbox. you need to take vehicle to a mechanic
How to replace Mitsubishi l200 gearbox bearings?
To replace the gearbox bearings on a Mitsubishi L200, first, ensure the vehicle is safely elevated and secure. Drain the gearbox oil, then remove the gearbox from the vehicle by disconnecting the necessary components like the driveshaft and linkages. Carefully disassemble the gearbox, taking note of the arrangement of parts, and replace the worn bearings with new ones. Reassemble the gearbox, refill with the appropriate oil, and reinstall it in the vehicle, ensuring all connections are secure.
Will the f23 gearbox fit a x20xev engine?
Yes, the F23 fits perfectly with the x20xev fitted into my Astra G.
How to change c5 gearbox auto?
To change the C5 automatic gearbox, first ensure the vehicle is safely elevated and secured. Disconnect the battery, then remove the driveshafts, torque converter bolts, and any electrical connectors linked to the gearbox. Unbolt the gearbox from the engine and carefully lower it from the vehicle. Install the new gearbox by reversing the process, ensuring all connections are secure and fluid levels are checked before starting the vehicle.
