By relocating the oil out of the sump area, the design lowers the center of gravity of the vehicle. Instead of relying on a single pan at the bottom of the engine to hold oil, this system utilizes multiple oil scavenge pumps and a separate external reservoir.
Drawbacks of Dry Sump Oil System and Potential Cons
Performance and Practical Benefits Beyond the technical advantages of pressure and temperature control, the dry sump system offers compelling practical benefits for specific applications. Additionally, because the system is not dependent on gravity to ensure oil flow, dry sumps are ideal for vehicles that operate in extreme orientations, such as racing cars that frequently run at angles or vehicles designed for off-road competition where oil slosh is a constant concern.
Because the reservoir is not physically attached to the engine, it is often mounted in a cool, stable area of the vehicle, such as the chassis or behind the bumper, which keeps the oil temperature consistently lower than in a wet sump system. This oil is pushed through small bore return lines to an external tank, known as the remote reservoir.
Understanding the Disadvantages of Dry Sump Oil Systems
This ensures that critical components like the crankshaft bearings and valve train are always lubricated, even when the vehicle is subjected to extreme G-forces, upside-down driving, or sudden stops. Maintenance is also more involved; checking oil levels requires a separate procedure for the remote tank, and the system is generally more expensive to service.
More About What is a dry sump oil system
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