Monthly Archives April 2014

Note: we have moved the complete list to our new site, all future updates will be published there.

The torsional rigidity is a critical parameter for a vehicle, which measures how many force you need to apply to “twist” the car body frame by one degree. Of course the larger of this value, the better.

From the consumer’s perspective, what is the benefit of a high torsional rigidity car body? A vehicle with high torsion rigidity will give the driver and passenger a more “solid” feel when the car is running, especially when the road is bumpy and has lots of potholes on it...

Last time I showed you some interesting facts about the ZF 9HP transmission. Today I am going to talk about the latest GM 8L90 8-speed automatic transmission, which will be used on the 2015 Corvette.

Please do not be confused with the Cadillac CTS 3.6 V6 trim’s 8-speed transmission, that one is not the 8L90. Instead GM sourced it from Aisin and it is a completely different design.

First I would like to show you the structure diagram of the 8L90. The drawing is from the patent GM filed with the US Patent and Trademark Office several years ago. As expected in a patent document, the drawing looks terribly complicated...

We are publishing live photos taken from the NY auto show. Here is the Lamborghini section.

Please click at each thumbnail to see the full image.

The ZF 9HP is a 9-speed automatic transmission for transverse engine layout, which is used on the Jeep Cherokee and the upcoming Acura TLX. While there are plenty of technical analysis on this new ZF product, here I am not going to feed you with some PhD-thesis-type content. Instead I have some interesting facts you may find interesting.

First off, don’t be frightened by the below ZF 9HP internal structure image, it is for your reference only, you don’t try and memorize it all in one go. It takes time to learn.

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Dear readers, five days earlier we published the news about the Chinese luxury brand HongQi’s latest model – L5, which is aiming at competitors such as the Rolls-Royce Ghost. This news has gained lots of attention during the past few days, and we received large amount of inquries about this car.

So here we provide a full story of the HongQi L-series luxury sedan family.

Currently for the L-series there are three members: L5, L7 and L9. The smallest model L5 has civilian version (which is the model that current western medias are reporting about), but the L7 and L9 are only reserved for head of state at this moment.

The L9 is reserved for the officer level such as presiden...