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Daimler introduces 4-cylinder, 48 V gasoline engine with a GPF

26 October 2017

Daimler is introducing a new 4-cylinder gasoline engine, designed to deliver the performance of a high-capacity 6-cylinder engine but with significantly reduced fuel consumption. The engine—which features a specific output in excess of 100 kW, a 48 V electrical system and a gasoline particulate filter (GPF)—will celebrate its world premiere in the Mercedes-Benz E-Class Coupé and Cabriolet models.

The new M 264 4-cylinder engine generates 220 kW/299 hp and maximum torque of 400 Nm from a displacement of 1991 cm3. In the E 350 Coupé, it achieves combined fuel consumption of 6.7 L/100 km with combined CO2 emissions of 149 g/km; in the E 350 Cabriolet, its fuel consumption is 6.8 L/100 km with combined CO2 emissions of 154 g/km. The engine is matched with a 9-speed 9G-TRONIC automatic transmission.

The engine’s special features include twin-scroll turbocharging with an electric wastegate actuator, belt-driven 48 V starter-alternator (EQ Boost) and electric 48 V water pump. In conjunction with the on-board 48 V technology, the starter-alternator enables a number of hybrid functions, such as:

Daimler pioneered the use of gasoline particulate filters in 2014, when a GPF was launched on the Mercedes S500. Daimler and other European carmakers are expected to introduce GPF technology on more vehicle models to meet the PN emission limit of 6.0×1011 km-1 (Euro 6c) and the PN RDE testing requirements (Euro 6d-TEMP) which became effective in September 2017.

Source: Daimler