Mercedes-Benz M276 engine
Encyclopedia
The Mercedes-Benz M276 engine is a direct injected
, V6
gasoline
automotive
piston engine.
The M276 engine is related to the Chrysler Pentastar V6 engine
, with which it shares its basic architecture, as it was developed while Chrysler was still owned by Daimler AG. This can be seen in its 60 degree vee-angle, as opposed to the 90 degree angle of its M272 predecessor. The 60 degree vee-angle eliminates the need for a balance shaft
, improving refinement while reducing mechanical complexity.
The M276 engine features an aluminum engine block and dual overhead camshafts with independent variable valve timing
on intake and exhaust valves and a new timing chain arrangement. The M276 also includes direct injection with piezo-electrically
controlled injectors for more precise fuel delivery, multi-spark ignition that allows for multiple ignition events during the combustion stroke, and modified accessories (such as the fuel pump, water pump, oil pump, and alternator) that reduce parasitic loads. These features are also shared with Mercedes' M278
V8 engine, announced at the same time.
Mercedes-Benz claim that the new engine, in conjunction with vehicle modifications such as a stop-start system, can produce up to a 24% improvement in fuel economy while increasing power and torque over the M272.
This version has a displacement of 3.5 liters (3499 cc) with a bore of 92.9 mm and stroke of 86 mm. Output is 306 hp (225 kW) at 6500 rpm with 273 ft·lbf (370 N·m) of torque at 3500-5250 rpm.
Gasoline direct injection
In internal combustion engines, gasoline direct injection , also known as petrol direct injection or direct petrol injection, is a variant of fuel injection employed in modern two-stroke and four-stroke gasoline engines...
, V6
V6 engine
A V6 engine is a V engine with six cylinders mounted on the crankcase in two banks of three cylinders, usually set at either a right angle or an acute angle to each other, with all six pistons driving a common crankshaft...
gasoline
Gasoline
Gasoline , or petrol , is a toxic, translucent, petroleum-derived liquid that is primarily used as a fuel in internal combustion engines. It consists mostly of organic compounds obtained by the fractional distillation of petroleum, enhanced with a variety of additives. Some gasolines also contain...
automotive
Automobile
An automobile, autocar, motor car or car is a wheeled motor vehicle used for transporting passengers, which also carries its own engine or motor...
piston engine.
The M276 engine is related to the Chrysler Pentastar V6 engine
V6 engine
A V6 engine is a V engine with six cylinders mounted on the crankcase in two banks of three cylinders, usually set at either a right angle or an acute angle to each other, with all six pistons driving a common crankshaft...
, with which it shares its basic architecture, as it was developed while Chrysler was still owned by Daimler AG. This can be seen in its 60 degree vee-angle, as opposed to the 90 degree angle of its M272 predecessor. The 60 degree vee-angle eliminates the need for a balance shaft
Balance shaft
In piston engine engineering, a balance shaft is an eccentric weighted shaft which offsets vibrations in engine designs that are not inherently balanced...
, improving refinement while reducing mechanical complexity.
The M276 engine features an aluminum engine block and dual overhead camshafts with independent variable valve timing
Variable valve timing
In internal combustion engines, variable valve timing , also known as Variable valve actuation , is a generalized term used to describe any mechanism or method that can alter the shape or timing of a valve lift event within an internal combustion engine...
on intake and exhaust valves and a new timing chain arrangement. The M276 also includes direct injection with piezo-electrically
Piezoelectricity
Piezoelectricity is the charge which accumulates in certain solid materials in response to applied mechanical stress. The word piezoelectricity means electricity resulting from pressure...
controlled injectors for more precise fuel delivery, multi-spark ignition that allows for multiple ignition events during the combustion stroke, and modified accessories (such as the fuel pump, water pump, oil pump, and alternator) that reduce parasitic loads. These features are also shared with Mercedes' M278
Mercedes-Benz M278 engine
The Mercedes-Benz M278 engine is a family of direct injected, V8 gasoline automotive piston engines.The M278 is derived from the company's previous M273 V8 engine, sharing its bore pitch, aluminum engine block, and Silitec aluminum/silicon low-friction cylinder liners...
V8 engine, announced at the same time.
Mercedes-Benz claim that the new engine, in conjunction with vehicle modifications such as a stop-start system, can produce up to a 24% improvement in fuel economy while increasing power and torque over the M272.
Specifications
There has been one variant of the M276 engine announced so far.This version has a displacement of 3.5 liters (3499 cc) with a bore of 92.9 mm and stroke of 86 mm. Output is 306 hp (225 kW) at 6500 rpm with 273 ft·lbf (370 N·m) of torque at 3500-5250 rpm.