The Mercedes-Benz 271 engine is designed to have a base displacement of 1796c Bang, the engine is no longer named according to the displacement, but according to the output power of the engine, the machine supercharger is more efficient than the previous generation M111 engine, and the midsection torque output is more ideal. The engine operation is under constant monitoring to avoid excessive thermal stress on the three-way catalytic converter in case of poor combustion ignition. If the engine control module detects a poor combustion ignition during the smooth operation analysis, after a certain number of poor ignition, the corresponding injector is no longer activated. However, at most two injectors will only be turned off at the same time. The M271 engine uses a single pipeline fuel supply mode, and the fuel supply system is regulated and monitored by the engine control module and the fuel pump control module. The fuel pump draws the fuel from the fuel supply module and sends it through the fuel filter to the fuel rail. The oil pressure regulator is integrated into the gasoline cell, and the pressure limiting valve limits the fuel pressure to approximately 380kPa. There is a check valve at the fuel supply point of the fuel filter to prevent the fuel pressure from decreasing when the fuel pump is turned off.