Xavier-NYC

Does any one know, for that matter do other CLK's and E350 engines post 2006 use this Stratified-Charged Gasoline Injection (CGI) tech for their injection? Or is the M272 (post 2007) a simpler port injected system?
The Wikipedia article on the M272 engine seem to imply that the CGI tech was only used in a few M272 variants - https://en.wikipedia.org/wiki/Mercedes-Benz_M272_engine the diagrams I have seen of the CLK350 engine do not seem to show a CGI injection system.
So is the CLK350 (and 550 etc) using a simpler port injected system? Which US models do sport the CGI injection, does anyone know?

For background, these articles describe the new injection system at introduction in 2006
https://media.daimler.com/marsMediaS...ml?oid=9905308 and https://paultan.org/2006/02/25/merce...injection-cgi/

To quote from the latter article "...Mercedes Benz was the first car manufacturer to use direct fuel-injection in it’s road cars, putting a direct-injection engine into the 1955 300SL Gullwing. Back then, things like fuel economy and emissions were not really an issue, but it is today. So car manufacturers everywhere are taking a look at gasoline direct injection to improve fuel efficiency and emissions.
Mercedes Benz has had four-cylinder CGI engines (strafified Charged Gasoline Injection), but recently they have just launched a new V6 CGI engine in the Mercedes Benz CLS 350 CGI. Mercedes Benz’s CGI allows extremely lean air-fuel mixtures rather than the normal 14.6:1 air-fuel mixture that normal injection engines use.
In a CGI engine, the air and fuel mixture is not mixed until they reach the combustion chamber. The intake ports are carefully engineered to provide optimum flow and swirl, making combustion as fast and as complete as possible. The fuel is injected into the cylinder at a degree of 42 degrees and a pressure between 50-120 bar.

While Mercedes Benz’s previous version of CGI has a flap in the intake to use direct injection at low engine load and switch to a normal air-fuel mixture at high engine load, this new version of Mercedes Benz’s CGI allows an ultra lean mixture at all RPM and engine load ranges. There are new fast and high-precision piezo-electric injectors. This allows the injectors to deliver multiple injections per compression stroke.

Fuel consumption for the Mercedes Benz CLS 350 CGI is rated at 31mpg (9.1 litres per 100km), which is not bad considering Audi’s V8 turbodiesel is rated at 37mpg. And that’s a diesel. My Proton Satria averaged about 10 litres per 100km. So the 272bhp engine in the CLS 350 CGI on average uses less fuel than my comparitively ancient in terms of technology 120bhp 1.8 SOHC engine .. "

Rudeney

The M272 is not a direct gas injection engine, so no, the CLK never had that.

Xavier-NYC

Ah -alright - thanks

gaazmon

In the US, I believe there were no DI engine choices until the M274, M276, M278, and their successors. It was due to emissions regulations or fuel standards not being up to par in the US yet or something I think.