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2011 Chevrolet Cruze: 1.4T Isn't Quite An EcoBoost Rival

 
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GM 1.4-liter turbo Ecotec - Chevy Cruze and Volt

GM 1.4-liter turbo Ecotec - Chevy Cruze and Volt

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2011 Chevrolet Cruze preview

2011 Chevrolet Cruze preview

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General Motors is fearlessly downsizing its four-cylinder engines in the new 2011 Chevrolet Cruze, and looking, in most of the Cruze lineup, for turbocharging to bring small-four fuel economy without sacrificing peppiness and drivability. While a naturally aspirated, 1.8-liter four-cylinder engine will be standard on the base Cruze LS, the fuel-efficient star of the lineup—and the engine on offer in all the rest of the Cruze trims—is a new (to North America) 1.4-liter turbocharged four-cylinder engine that produces 138 horsepower.

GM says that the engine, which will also be installed sans turbo in the 2011 Chevrolet Volt, will offer best-in-segment fuel-efficiency (40 mpg highway in the Cruze Eco), and calls it "one of the most fuel efficient four-cylinder engines of its kind in the world"

But it's worth noting a few key design differences between the Cruze and the all-new 2012 Ford Focus that's waiting in the wings, for introduction just a few months after the Cruze.

For one, Ford is planning to offer a larger standard engine on the Focus—a 2.0-liter unit—featuring direct injection. That will be the only engine on offer at launch, but a version of the automaker's EcoBoost turbocharged four-cylinder engine—likely a 1.6-liter—is also expected to follow.

But is GM pitching the new 1.4T with a performance angle, as Ford will no doubt do for that EcoBoost option? It appears not. The assistant chief engineer for the Ecotec four, Mike Katerberg, explained that the 1.4T was tuned for everyday drivability more than power figures. "The turbo was sized really for two reasons; one is for maximum low-speed torque as opposed to top-end power," he said. "The intent was to make it look like a larger-displacement engine."

The engine produces its 148 lb-ft peak torque at just 1850 rpm, and as reported with a preview drive of the 2011 Chevrolet Cruze on companion site The Car Connection, the Ecotec 1.4T really does feel like a larger-displacement four—more like a 2.2-liter (the size installed in the Chevy Cobalt) in overall responsiveness.

As for why GM didn't opt to install direct injection in the U.S. version of the 1.4T, it was a conscious decision to hold down cost and complexity for the Cruze, a vehicle for which price will be very important. "In General Motors, we have a wide variety of fuel-saving technologies," elaborated Katerberg. "We do use direct injection on a number of other engines…but for what we were trying to accomplish with the Cruze, port fuel [injection] is the right choice."




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Comments (5)
  1. I prefer a smaller turbo which is more efficient. All I need is a reasonable amount of power and don't want to pay for something I don't need.
     
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  2. Old tech, but really, it's better for you! We've heard it before.
    Recaptcha, amazingly, summed up this engine better than I ever could: for leyland.
     
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  3. GM is finally listening to the scientists. Keep the costs down and still get 40 mpg what's not to like. A car for the masses. GM's baaack!
     
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  4. Interesting read. The power and torque numbers are nearly exactly on par with my Mk1 Focus Zetec; and that's 600cc larger! If they can manage to make the chassis anywhere near as crisp and responsive as my Focus, the Cruze could be a good replacement. It's attractive, and the Mk3 Focus that's FINALLY coming to the US seems rather large/heavy compared to mine. I'm glad it has higher torque than HP; I've always favored torquey engines rather than whizzing, high rpm powerband mills that you have to rev the nuts off just to keep going. Then again, my dad did have a '69 ElDorado with the 500 V8, so that probably explains my fixation on torque!
     
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  5. Yep about the aluminum vs cast iron debate.. Ford's 1 Liter 3-cylinder 125HP Ecoboost engine will be cast iron.

    I should mention that Ford's 2L non Eco-boost Direct Injected Focus, according to fuelly it doesn't do very well with MPG, worse than the Cruze. So that tells you that Direct Injection doesn't provide that much more efficiency.
    Neither does downsizing engines, it only helps a little.
    This is seen when you have turbocharged 4 cylinder engines in sports cars; According to the EPA they don't do much better than a V6 found in say a Camaro/Mustang. Maybe 5-10% better in MPG. A good start though.

    Atkinson and HCCI engines with hybrid powertrains are the future, no question about it.
     
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