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William Maley

Mazda News: Rumorpile: Mazda's HCCI Engine To Be Detailed Later This Month, Debut In 2019 Mazda3

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Back in January, we reported on the rumor that Mazda was planning to launch a Homogeneous charge compression ignition (HCCI) engine for the 2018 Mazda3. HCCI engines are unique as they use compression, not spark to ignite gasoline. This will improve fuel economy and emissions. But the thing about HCCI engines is that automakers will produce prototypes and say they'll be coming within the new few years, and then nothing happens.

We have some new details about Mazda's plan to debut their new HCCI engine. According to Motoring, Mazda will debut the engine at a technology forum in Frankfurt later this month. Reportedly, the engine will feature spark plugs to ignite the fuel at low rpms. Compression ignition will take place at higher rpms.

Following this, Mazda will be showing off a concept at the Tokyo Motor Show in October. The concept will preview the next Mazda3 and possibly feature the new engine. The next Mazda 3 is expected to be revealed next year as a possible 2019 model year vehicle.

Source: Motoring


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H'mmmmm

I will watch this with interest as Mazda has had their Diesel misfire and so I have to wonder about a gas HCCI engine that based on the info to date would not be a true HCCI engine but a hybrid. So traditional spark plugs and spark to start and at low rpms but then HCCI at high rpms? Wish them the best of luck.

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9 hours ago, dfelt said:

H'mmmmm

I will watch this with interest as Mazda has had their Diesel misfire and so I have to wonder about a gas HCCI engine that based on the info to date would not be a true HCCI engine but a hybrid. So traditional spark plugs and spark to start and at low rpms but then HCCI at high rpms? Wish them the best of luck.

HCCI in the past has always had sparkers to fall back on because the charge needs to be "just right" and that doesn't happen at start and supposedly drastic load changes.... just sayin.

the '18 3 models have been on lots for a few weeks, but very limited news of other model's updates for the '18 MY. basically more safety tech lower in the tiers...

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i saw elsewhere that there maybe a super charger to go with the HCCI engine.

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