Im not to clear on the technical aspect of motorsports, so I have some pretty basic questions.
1.What is a sequential gearbox?
2.What does the term blipping the engine mean?
3.Whats the difference between normally aspirated engines, and other engines?
Some questions
Started by
JayWay
, Dec 13 1999 12:44
3 replies to this topic
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#2
narhuit
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- 223 posts
- Joined: December 98
Member
Posted 13 December 1999 - 19:02
1. and 3. should be within my grasp...
1. With a sequential gearbox, you can only shift one gear up or down at a time. You cannot directly select the gear you want (for instance, you are in 5th, you cannot directly downshift to 2nd while breaking into a corner, but you have to downshift through 4th, and 3rd before reaching 2nd). Motorcycles have "manual" (or should I say "footal") sequential gearboxes. But modern F1 (and some very recent "sport" road cars) have electronic-driven sequential gearboxes, allowing for rev-limiter devices, preset up-shifting for accelerations, automatic clutch, and so on...
3. In a normally aspirated engine, cylinders just suck the atmospherical air. On other engines, some kind of device sucks the air and blows it under higher pressures into the cylinders, allowing for very-very-much more air into the cylinders, increasing the engine efficiency. For instance, in a turbo-charged engine, the high pressure of the exhaust system is used to "power" a turbin, which compresses the incoming airflow before it arrives in the cylinders.
[This message has been edited by narhuit (edited 12-13-1999).]
1. With a sequential gearbox, you can only shift one gear up or down at a time. You cannot directly select the gear you want (for instance, you are in 5th, you cannot directly downshift to 2nd while breaking into a corner, but you have to downshift through 4th, and 3rd before reaching 2nd). Motorcycles have "manual" (or should I say "footal") sequential gearboxes. But modern F1 (and some very recent "sport" road cars) have electronic-driven sequential gearboxes, allowing for rev-limiter devices, preset up-shifting for accelerations, automatic clutch, and so on...
3. In a normally aspirated engine, cylinders just suck the atmospherical air. On other engines, some kind of device sucks the air and blows it under higher pressures into the cylinders, allowing for very-very-much more air into the cylinders, increasing the engine efficiency. For instance, in a turbo-charged engine, the high pressure of the exhaust system is used to "power" a turbin, which compresses the incoming airflow before it arrives in the cylinders.
[This message has been edited by narhuit (edited 12-13-1999).]
#3
Ursus
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- 2,411 posts
- Joined: March 99
Member
Posted 13 December 1999 - 19:26
'Blipping' means that you tap the throttle to bring up the revs. E.g. when you downshift while maintaining constant speed the lower gear requires higher revs on the engine so you 'blip' the throttle/engine before releasing the cluch to make a smooth shift.
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Ursus
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Ursus
Trust me, send money.
#4
John B
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- 7,924 posts
- Joined: June 99
Member
Posted 21 December 1999 - 02:15
Earlier this summer we had a thread about driving styles and blipping the engine. This was posted by Zoe:
The Senna-esque throttle blipping was in fact to keep the turbo spinning. With a turbo engine you need revs revs revs. So, if you
brake and shift down, usually the engine revs will drop, therefore you take every opportunity to keep the turbo spinning. YOu can check this even with some road cars when standing at a traffic light. Just rev the engine before you actually take off and you will have lots more power than without that trick.
The Senna-esque throttle blipping was in fact to keep the turbo spinning. With a turbo engine you need revs revs revs. So, if you
brake and shift down, usually the engine revs will drop, therefore you take every opportunity to keep the turbo spinning. YOu can check this even with some road cars when standing at a traffic light. Just rev the engine before you actually take off and you will have lots more power than without that trick.
