BMW M21 | |
---|---|
Overview | |
Manufacturer | BMW Motoren GmbH Steyr |
Production | 1983–1991 |
Layout | |
Configuration | Straight-6 |
Displacement | 2.4 L (2,443 cc) |
Cylinder bore | 80 mm (3.15 in) |
Piston stroke | 81 mm (3.19 in) |
Cylinder block material | Cast iron |
Valvetrain | SOHC 2 valves x cyl. |
Compression ratio | 22.0:1 |
Combustion | |
Operating principle | Diesel |
Turbocharger | Garrett T03 ('td' versions), None ('d' versions) |
Fuel system | Swirl chamber injection, distributor fuel injection pump |
Fuel type | Diesel fuel 45 CN (DIN 51601) |
Cooling system | Water-cooled |
Output | |
Power output | 63–85 kW (84–114 hp) |
Torque output | 152–220 N⋅m (112–162 lb⋅ft) |
Chronology | |
Predecessor | None |
Successor | M51 |
The BMW M21 is a straight-six diesel engine developed by the German engine manufacturer BMW. It has swirl chamber injection and is based on the M20 petrol engine[1] and was produced for BMW by the Upper Austrian Steyr engine plant from 1983 to 1991. It was succeeded by the M51.[2]