may be a bullsh!t, but according to china press, next year we will have a newly improved 20% more powerful generation 2 campro engine fitted to BLM, vim+cps???

[attachmentid=337628]

it will fire an explosive charge to tighten seat belt during head-on collision

off topic a bit, but below is an easy to understand explanation about pretensioner from wiki:

Seatbelts in many newer vehicles are also equipped with "pretensioners" and/or "Webclamps".

* Pretensioners preemptively tighten the belt to prevent the occupant from jerking forward in a crash. Mercedes-Benz first introduced pretensioners on the 1981 S-Class. In the event of a crash, a pretensioner will tighten the belt almost instantaneously. This reduces the motion of the occupant in a violent crash. Like airbags, pretensioners are triggered by sensors in the car's body, and most pretensioners use explosively expanding gas to drive a piston that retracts the belt. Pretensioners also lower the risk of "submarining", which is when a passenger slides forward under a loosely worn seat belt.

for your info saw the news from sattv, one benz owner in china who was injured badly in a head to head car clash yet the airbags did not trigger, did not receive any compensation from the car manufacurer. So benz also has low quality parts.

This post has been edited by neb: Jan 1 2008, 10:10 PM

that is not pretentioner, but called the locking mechanism without using any explosive, again from wiki:

Most seat belts are equipped with locking mechanisms (or inertia reels) that tighten the belt when pulled fast (e.g. by the quick force of a passenger's body during a crash) but do not tighten when pulled slowly. This is implemented with a centrifugal clutch, which engages as the reel spins quickly. Alternatively, this function may be secured by a weighted pendulum or ball bearing: when these are deflected by deceleration or roll-over they lock into pawls on the reel.

proton co-develop campro engine with lotus, so you already got some lotus in the engine