2012 Mercedes-Benz S-Class (S400 HYBRID, S350 BlueTEC 4MATIC, S550, S63 AMG, S600, S65 AMG) | Conceptcarz.com

7 Feb 2015 | Author: | Comments Off on 2012 Mercedes-Benz S-Class (S400 HYBRID, S350 BlueTEC 4MATIC, S550, S63 AMG, S600, S65 AMG) | Conceptcarz.com
Mercedes-Benz S-Class

2012 Mercedes-Benz S-Class news, pictures, and information

2012 S-Class Line Features More Power, Improved Fuel Economy

S350 BlueTEC Diesel Joins Hybrid, V8 and V12-Powered Siblings

The company’s flagship sedan, the Mercedes-Benz S-Class is viewed in many circles as the finest automobile in the world. For the 2012 model year, a new model, the S350 BlueTEC features a fuel-sipping 3.0-liter V6 turbodiesel (240 hp, 455 lb.-ft.) and standard 4MATIC all-wheel drive. In addition, the S550 features a new 4.6-liter twin turbo direct-injection V8 (429 hp, 516 lb.-ft. of torque), producing both more power and better fuel economy (estimated 15 mpg city / 23 mpg highway).

The 2012 line-up also includes an innovative S400 HYBRID (295 hp, 284 lb.-ft.). In contrast to the frugal diesel and hybrid models, the high-performance V8-powered S63 AMG (536 hp, 590 lb.-ft.) and two magnificent V12-powered cars – the S600 (510 hp, 612 lb.-ft.) and the S65 AMG (621 hp, 738 lb.-ft.) – round out the S-Class sedan lineup. Most 2012 S-Class models are equipped wîth a new more fuel efficient seven-speed automatic transmission. (posted on conceptcarz.com)

No Sacrifice in Convenience or Roominess

The diesel-powered S350 BlueTEC and the S400 HYBRID boast the same interior room, luxury and convenience features as other S-Class vehicles. Both the diesel and hybrid S-Class models are excellent examples of choices for today’s world that don’t involve compromises in aesthetics or comfort.

The hybrid model is differentiated by HYBRID logos on the trunk lid and dash as well as BlueEfficency badging on the front fenders. A special hybrid pictogram within the speedometer shows the energy flow, energy recovery and battery charge.

BlueTEC – A Blueprint For The World’s Cleanest Diesels

The first diesel-powered S-Class in the Ú.S. market since the 1995 model year, the new S350 BlueTEC 4MATIC model is powered by a purpose-built 3.0-liter V6 diesel wîth 240 horsepower, an astonishing 455 lb.-ft. of torque and estimated fuel economy of 20 mpg city / 31 mpg highway. Úsing several technologies to minimize diesel exhaust emissions, the S350 BlueTEC 4MATIC begins wîth a four-valve-per-cylinder diesel featuring centrally located piezo-electric injectors, CDI direct injection, a variable-nozzle turbocharger and exhaust gas recirculation.

Building on this foundation of advanced engine design, the S350 BlueTEC incorporates several modular after-treatment units in the exhaust stream – an oxidizing catalytic converter, a maintenance-free particulate filter, an SCR converter and an NOx storage converter. In the ‘denox’ storage converter, nitrogen oxides are absorbed temporarily, and during brief regeneration pulses of a richer fuel-air mixture, the nitrogen oxides are released, reacting wîth other exhaust gas to form harmless nitrogen. These regeneration pulses also raise temperatures in the particulate filter, which automatically burns off the deposits.

Mercedes-Benz S-Class

The New V8 – 20 Percent Better Fuel Economy, 32 Percent More Power

The 2012 S550 sedan is powered by a new 4.6-liter V8 that gets 20 percent better fuel economy (15 mpg city, 23 mpg highway) while producing 30 percent more power – an astounding feat, considering that increasing either power or fuel economy usually decreases the other. The new V8 features direct fuel injection, twin turbochargers and multi-spark ignition.

Based on its highly successful 5.5-liter predecessor, the new V8 engine has 20 percent smaller displacement but generates 429 horsepower and 516 lb.-ft. of torque – 32 percent more than the engine it replaces. Its smaller displacement is more than offset by the power boost of its twin turbochargers – one for each bank of cylinders. Piston crowns are four millimeters thicker to handle the higher combustion pressures, while shorter connecting rods allow existing block dimensions to be retained.

Like its predecessor, the new engine has aluminum cylinder heads, pistons and cylinder block (with cast-in Silitec cylinders), as well as a crankshaft, connecting rods and valves made of special forged steel.

Direct Fuel Injection

While most gasoline engines have used indirect port fuel injection in the past, the V8 makes use of -leading electronics technology first used on Mercedes-Benz diesels – electronic fuel injectors that spray gasoline directly into the combustion chambers. Featuring a piezo-ceramic crystalline element that changes shape when electrical current is applied, blazingly fast piezo injectors make it possible to design very sensitive and precise injection systems, including the ability to program several small injections wîth each piston stroke.

The first injection is sprayed into the combustion chamber as the piston is descending on the intake stroke. Depending on speed, load and temperature conditions, another injection or two takes place during the compression up-stroke before ignition, forming a stratified mixture. A fourth injection can stabilize combustion if it’s needed.

Multi-Spark Works wîth Multi-Squirt

Mercedes-Benz S-Class
Mercedes-Benz S-Class

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