WHAT IS A DUBLE DE CLUTCHING SYSTEM IN AUTOMOBILE
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Answer:
Double-clutching (also called double de-clutching in countries outside of the United States) is a method of shifting gears used primarily for vehicles with an unsynchronized manual transmission, such as commercial trucks and specialty vehicles. While double clutching is not necessary in a vehicle that has a synchronized manual transmission, the technique can be advantageous for smoothly upshifting in order to accelerate, and when done correctly it prevents wear on the "synchros" which normally equalize transmission input and output speeds to allow downshifting.
With this method, instead of pushing the clutch in once and shifting directly to another gear, the driver first engages the transmission in neutral before shifting to the next gear. The clutch is depressed and released with each change.[1] A related downshifting/rev-matching technique is heel-and-toe shifting, in which the throttle is blipped (i.e. momentarily opened while engaged in downshifting) by the driver's heel. The driver's toes will accomplish the braking as the clutch is depressed, causing the engine speed to rise and closely match the transmission speed enabling smooth performance downshifts. These two techniques can be combined, e.g. using the "toe" to brake to slow the car while entering a corner, while using the heel to press the throttle pedal for the double-clutch technique. In this manner, one may downshift and brake at the same time, and be ready to accelerate again once the corner is completed.
Answer:
In the main, double declutching really is what is says on the tin – for one gear change, you push the clutch in twice. Once to move out of gear and into neutral, and again to move into your chosen gear. But this alone won't get your engine, clutch, gearbox and driveshaft as in sync as a boy band.
Explanation:
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