Turbocharged gasoline engines became popular in the early 1980s, when Renault, Mitsubishi, Volvo and Saab adopted them. On the gasoline side, Mercedes, Jaguar, Mini and General Motors offer a few supercharged models.īut automakers generally prefer to use turbochargers with gasoline engines. Many diesel engines are turbocharged, but virtually none are supercharged. Turbochargers are driven by air pressure from the engine's exhaust.Įither device allows automakers to increase the power of small engines. Superchargers are mechanically driven, typically by a belt connected to the crankshaft. Turbochargers and superchargers both pump mixtures of air and fuel into engine cylinders, substantially boosting power.īoth use rotary fan blades to drive the air-fuel mixture, but the blades are powered differently. But the California Air Resources Board has announced plans to limit carbon dioxide emissions, triggering a major battle with automakers. government has not imposed similar standards. Teamed with smaller gasoline engines, turbochargers will help automakers meet stricter carbon dioxide emission rules that take effect in Europe in 2008. That's why turbochargers are making a comeback in Europe. Turbos also generally deliver better fuel economy. Turbochargers are cheaper than superchargers for gasoline engines. Jim Resnick, a spokesman for Mercedes-Benz USA LLC, declined to comment on the company's U.S. It would be based on the A class, but it is not clear whether a turbocharged version will be available. Mercedes plans to introduce an entry-level B Class model in the United States next year. Turbocharging has greatly improved in the meantime, and we have virtually no turbo lag anymore." "When we introduced the supercharged engines it was the right decision. "Turbochargers are superior to superchargers in terms of noise and cost," said Juergen Frey, head of engine development for the A class. Mercedes will add a turbocharged 2.0-liter gasoline engine for the A Class subcompact that debuts in Europe this autumn. Please let us know if you have further concerns or questions as we are always here to help you.STUTTGART - Mercedes-Benz will drop supercharged Kompressor gasoline-powered engines from its lineup in favor of turbochargers. Regardless of the underlying cause, if you request a no start diagnostic the responding certified mechanic will get the problem diagnosed and repaired for you promptly. Other possible no start faults are low compression, defective spark plugs, a defective coil(s), a failed crankshaft or camshaft position sensor, a failed throttle position sensor, and a broken timing belt. Check for vacuum leaks, an air induction fault like a stuck idle air control valve or, considering fuel, check for a failed temperature sensor that must be working properly to signal the PCM to enrich the mixture on cold start. Basically, if the starter motor is turning the engine over rapidly, at sufficient RPM, but the engine does not catch and run, that means that there is an ignition, fuel, air induction, or mechanical fault in the engine that will have to be repaired. Check for adequate fuel pressure, injector operation, and a spark at the spark plugs. Download any OBD-II trouble codes that have been stored and examine those codes for diagnostic clues. If the engine cranks at adequate RPM, be sure there is adequate fuel in the fuel tank and that the fuel is not old. If the warning light is on, to temporarily override the immobilizer system, see these instructions. If the immobilizer system is on, you may see a security warning light. Confirm that the engine immobilizer system (security system) is not activated thus preventing the car from starting.
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