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BMW N26

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The BMW N26 is a SULEV (Super Ultra Low Emission Vehicles) turbocharged gasoline straight-4 DOHC piston engine which replaced the BMW N20 in countries like US that requires more restricted emissions systems.

The differences for an example are that in the rest of the world where it is acceptable, rubber fuel hoses are commonly employed in vehicle fuel systems. However, in the US metal pipes are specified as these ensure that fuel vapour and fuel are less likely to be emitted into the environment. Road side spot checks carried out in the US also mean that emission reducing systems need a robust means of being tested, this not being a requirement in the rest of the world at present. The US version and United Nations Economic Commission for Europe (ECE) version of the N20 commonly employ a fuel tank venting system. This system is designed to route fuel vapour formed in the fuel tank into the engines intake system where it is combusted. However, in the US model the system needs a way of being tested for leaks to the atmosphere. Therefore, an additional valve is installed in the fuel tank venting system that closes off the venting lines so as a specific vacuum can be applied to them and through this action leaks in the system lines can be detected.

Engine Displacement Power Torque Redline
N26B20 1,997cc 180 kW (245 PS; 241 hp) @ 6500 350 N·m (258 lb·ft) @ 1250-4800 7000

See also

List of BMW engines