Mercedes-Benz M272 engine
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The Mercedes-Benz M272 engine is a V6 automobile piston engine family used in the 2000s. Introduced in 2004, it is based on the M112 V6 introduced in 1998.
All M272 engines have aluminum engine blocks with a 90° vee angle with silicon/aluminum lined cylinders. The aluminum DOHC cylinder heads have 4 valves per cylinder. All use SFI fuel injection. All have forged steel connecting rods, a one-piece cast camshaft, iron-coated aluminum pistons and a magnesium intake manifold. Like the M112, a balancer shaft was installed in the engine block between the cylinder banks to deal with inherent vibration problems inherent in the 90 degree V6 design. This essentially eliminated first and second order vibration problems. A dual-stage Variable Length Intake Manifold is fitted to optimise engine flexibility.
Continuous VVT was adopted for the first time. Featured on both the intake and exhaust camshafts, each can be varied through a range of 40 degrees. The twin spark plug system was replaced by a regular single spark plug per cylinder. New electronic coolant flow control has replaced the mechanical thermostat for improved engine warm-up and optimum control of engine temperature.
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[edit] E25
The E25 is a 2.5 L (2469 cc) version. Bore dimension is 88 mm and stroke is 68.4 mm. Output is 204 hp (150 kW) at 6100 rpm with 181 ft·lbf (245 N·m) of torque at 2900-5500 rpm.
Applications:
- 2004– C230
[edit] E30
The E30 is a 3.0 L (2996 cc) version. Bore is 88 mm and stroke is up to 82 mm. Output is 231 hp (170 kW) at 6000 rpm with 221 ft·lbf (300 N·m) of torque at 2500-5000 rpm.
Applications:
[edit] E35
The E35 is a 3.5 L (3498 cc) version. Bore dimension is 92.6 mm and stroke is 86 mm. Output is 268 hp (200 kW) at 6000 rpm with 258 ft·lbf (349 N·m) of torque at 3500 rpm.
Applications:
- 2004– SLK350
- 2004– CLS350
- 2005– CLK350
- 2005– C350
- 2005– E350
- 2005– R350
- 2005– S350
- 2005– ML350
- 2005– Viano
