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It produces 90 kW (122 PS; 121 hp) of power at 5500 rpm and 170 N⋅m (125 lb⋅ft) at 4200 rpm. Starting with 1996 it has a variant called the M111.921 [2] which has a MAF (Mass Air Flow)-sensor instead of MAP-sensor on the first one, and using ECU instead of PMS. Applications: 1993–2000 C 180 (W202)
A mass (air) flow sensor (MAF) is a sensor used to determine the mass flow rate of air entering a fuel-injected internal combustion engine. The air mass information is necessary for the engine control unit (ECU) to balance and deliver the correct fuel mass to the engine. Air changes its density with temperature and pressure.
The data is used to calculate air density and determine the engine's air mass flow rate, which in turn determines the required fuel metering for optimum combustion (see stoichiometry) and influence the advance or retard of ignition timing. A fuel-injected engine may alternatively use a mass airflow sensor (MAF sensor) to
L-Jetronic was often called Air-Flow Controlled (AFC) injection to further separate it from the pressure-controlled D-Jetronic — with the 'L' in its name derived from German: luft, meaning 'air'. In the system, air flow into the engine is measured by a moving vane (indicating engine load) known as the volume air flow sensor (VAF) — referred ...
In many late model automobiles, a Mass Airflow (MAF) sensor is used to accurately determine the mass flow rate of intake air used in the internal combustion engine. Many such mass flow sensors use a heated element and a downstream temperature sensor to indicate the air flowrate. Other sensors use a spring-loaded vane.
Mercedes-Benz M111 engine The M102 engine family is a inline-four gasoline automobile engine family built by Mercedes-Benz in the 1980s and early 1990s. It is a relatively oversquare engine with a large bore and short stroke compared to the M115 engine which was used during the same timeframe.
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