Infiniti’s New VC-T Engine - Infiniti Q30 Forum
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post #1 of 14 (permalink) Old 08-15-2016, 03:25 PM Thread Starter
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Default Infiniti’s New VC-T Engine



We may have thought that Infiniti’s new 3.0-liter twin-turbo V6 engine, codenamed VR30, was the most powerful and fuel efficient production engine that the manufacturer had to offer but their recent announcement has revealed another trick up their sleeves.

Set to be presented at the 2016 Paris Motor next month on the 29th, Infiniti will show off the first ever production-ready variable compression ratio engine. Shortened to VC-T (Variable Compression-Turbocharged), this will be one of the world’s most advanced internal combustion engines ever created.

This engine has been in development for more than 20 years and Roland Krueger, president of INFINITI Motor Company, claims the new four-cylinder turbocharged gasoline VC-T engine is going to be a “revolutionary next-step in optimizing the efficiency of the internal combustion engine."
What makes this technology so special is the engine’s ability to deliver the same power as a high-performance 2.0-liter turbo gas engine but at higher level of efficiency. It can automatically and seamlessly adjust the height the pistons’ reach which in turn changes the compression ratio when needed.
The engine displacement can drastically change, anywhere from a high performance 8:1 compression ratio to a fuel sipping 14:1 is possible. By doing so, the VC-T motor can optimize the compression ratio to tackle the task at hand, something that engines with a fixed compression ratio cannot do.



Besides reducing fuel consumption and emissions, the new VC-T technology will also decrease noise and improve vibration levels, help the engine shed a few pounds and make it more compact. According to Reuters, when it’s compared to a conventional 3.5-liter V-6 engine, the 2.0-liter VC-T engine was found to be around 27% more efficient.

Even though Infiniti isn’t the first one to develop a variable-compression engine, the company may be the first one to bring it to production. We’ll just have to wait for their press conference on the 29th at 12:30 p.m. local time to have an idea of which model they plan to debut this technology in.
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post #2 of 14 (permalink) Old 08-16-2016, 12:31 PM
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I've heard this could be so good that it could demolish the diesel engines.
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post #3 of 14 (permalink) Old 08-16-2016, 02:56 PM
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It's situations like this that really make you think about all the "green" powertrains. Traditional engines still have a long way to go and this is proof of it. Even Mazda has done something recently on their end, all while not going the Hybrid and EV route. Glad to see Infiniti is following along.
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post #4 of 14 (permalink) Old 08-19-2016, 10:59 AM
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If it has the same performance as a 2.0-liter turbo, that means we could see around 208hp on tap with and it'll be more fuel efficient than Infiniti's Q50.
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post #5 of 14 (permalink) Old 08-22-2016, 11:09 AM
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If Infiniti paired the VC-T tech with a part-time Atkinson cycle in a car, we could see an engine with a huge range of operating characteristics.
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post #6 of 14 (permalink) Old 08-22-2016, 04:49 PM
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This does sort of add up to that whole goal they had for something compact and ideal for the city, a first for the brand during an era like this. So this could be it. Then maybe find its way into a Nissan or a few Nissans?
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post #7 of 14 (permalink) Old 08-23-2016, 10:48 AM
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It'll definitely trickle down as it's a huge performance benefit in making this even more efficient. This is the future.
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post #8 of 14 (permalink) Old 08-23-2016, 10:53 AM
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I don't doubt that Infiniti will design a new model, a kind of halo car for the VC-T engine as a way to show it off. If not, what model do you guys think they'll put the new engine into?
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post #9 of 14 (permalink) Old 08-24-2016, 11:09 AM
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The Q80... No I doubt it.. but possibly the QX Sport on their future line up
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post #10 of 14 (permalink) Old 08-25-2016, 11:04 AM
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Makes sense to put the engine in a crossover or SUV as those two segments have a huge portion of the automotive market right now and people who buy them usually looks at the car's fuel economy too.

QX Sport looks like a good candidate or maybe they'll bring the Ethera concept to life just for this engine.
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