FLAT TYPE DIFFERENTIAL FOR TRUCKS AND REAR WHEEL DRIVEN CARS
Introduction
Consider this scenario - A truck driver comes across some debris on the road such as a rock or something dropped from another vehicle. The truck driver swerves to avoid the debris by steering the front wheels to straddle the obstacle. That works for the front wheels, but the hub of the differential hits the obstacle. The casing of the hub is damaged, lubricating oil leaks, and the truck and driver are soon stranded at the side of the road. This is a common scenario.
The idea to develop a Flat type differential came from several incidents of trucks getting hit by rocks or obstacles on the road, which drivers can’t always avoid because of traffic. Often the damage goes un-noticed by the driver until the lubrication oil leaks out, leading to a costly repair.
Why a Flat type Differential?
Flat type differentials can reduce the risk of hitting rocks and other obstacles on the road. With a flat type differential, the driver only has to judge whether the obstacle can be straddled without hitting the front axle. If so, the rear axle will also pass over the obstacle. Moreover, a flat type differential simply looks better.
Please see the figure below.

I’m interested in speaking to an automotive engineer or other representative of an automotive manufacturer about advancing this design and project. Contact me at the email below to discuss further.
Submitted by:
P. Premnath