Brief Description B284

Brief description B284





Petrol engine
The B284 is a turbocharged, 2.8 liter, V6 engine made solely of aluminum with 60 degrees between the cylinder banks, four valves per cylinder and two chain-driven camshafts per bank. The firing order is 1-2-3-4-5-6. The front cylinder bank has even numbers (2-4-6) while the rear has odd numbers (1-3-5).

The turbocharger, known as a "twin scroll" turbocharger, is a relatively new type for petrol engines. "Twin scroll" means that the turbine housing is divided into two spirals - one fed from the front cylinder bank and the other fed from the rear cylinder bank. The compressor has a standard design.

In order to achieve better performance, lower fuel consumption and low emissions, the engine is equipped with continuous variable cam phasing (CVCP). With CVCP, the engine's intake camshafts can be adjusted to generate the best function. These adjustments occur hydraulically.