BMW B57B30TOP engine

The B57B30TOP was a diesel power unit with a displacement of 3 liters. Thanks to the installation of an additional turbocharger in the form of a turbine, it was possible to achieve a power of 400 horsepower. The motor was designed specifically for installation on BMW 7 Series cars.

Engine specifications B57B30TOP

Features

This is a new range of three-liter engines that was developed specifically to replace the outdated generation of previous N57 engines. The B57B30TOP six-cylinder power unit was one of the modifications of the B57D30 diesel power units. Distinctive features consisted only in more power, which was not stifled at the level of software, but on the contrary increased in order to provide better dynamics of the cars of the seventh series. Since the weight of the cars was quite high, the need for good power figures overshadowed economy, but despite this, the power units were not characterized by high fuel consumption.

The engine used the classic BMW TwinPower Turbo technology, which utilizes two additional turbochargers in the form of turbines. The use of turbochargers with variable geometry has paid off, and the engines have begun to deliver more power than could be achieved without other design changes.

The Common-Rail system, which provides direct fuel injection into the engine, was also used. The fuel ramp remained common to all six cylinders. Direct injection also had positive results in the form of a power boost. This helped to achieve the B57B30TOP engines being the most powerful six-cylinder diesel power units at the time of their introduction.

The use of twin-turbine technology and piezoelectric nozzles, which provide a maximum pressure of 2.5 thousand bar, made it possible not only to obtain more horsepower, but also to achieve maximum fuel efficiency. Significant reduction in fuel consumption has led to a reduction in the amount of harmful emissions into the atmosphere. And in the race for environmental performance, where limits are constantly being tightened, this was one of the indicators of success. Compared to the previous generation of power units, the engine began to consume 10% less fuel.

Technical specifications

B57B30TOP was different from the engines of its range. The displacement did not differ from other modifications, which can be seen from the markings – it was 2993 cubic centimeters. The stroke of the piston also remained unchanged, and amounted to 90 millimeters, while the diameter was 84 millimeters. This made it possible to achieve a compression ratio of 16 to 1.

Maximum output of 400 horsepower was achieved at 4,400 rpm. Peak torque was reached in the range of 2 to 3 thousand rpm. It amounted to 760 Nm. Average fuel consumption was a little more than other modifications, it was from 5.7 to 5.9 liters of diesel fuel for every 100 kilometers of travel. The engine met the requirements of Euro 6 environmental class.

The engine resource is quite large – it exceeds 300 thousand kilometers. But to achieve such indicators, normal care, adequate driving style and timely oil change are required. It is necessary to choose lubricating fluid and diesel fuel for such power units only qualitative, as they are quite demanding to these indicators. Lubricating fluid should be changed every 5-7 thousand kilometers, depending on the driving style and operating conditions of the power units.

This engine is installed on the following models:

BMW 7-Series (G11, G12)