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Mazda's next-gen SkyActiv engines will drop spark plugs in favor of high compression

Homogeneous charge compression ignition, or HCCI, is the black art of internal combustion engines that aims to produce diesel-like fuel efficiency for the cost of gasoline. Although some of its competitors have developed and subsequently given up on the tech, Mazda confirmed that the next-generation of SkyActiv engines will employ HCCI technology, improving fuel economy by 30 percent and at the same time reducing exhaust emissions. According to Nikkei, a new SkyActiv family of engines is set to debut under the hood of the next-gen Mazda3 sometime in 2018 before making its way into other vehicles. In simple terms, an engine that uses HCCI burns the air/fuel mix using pressure instead of with spark plugs, just like a diesel. At 14:1, Mazda's gasoline engines already have some of the highest compression ratios out there, but a move to HCCI means cranking up the compression to 18:1. While the tech sounds relatively straightforward, using HCCI means dealing with a number of side issues. It's one of those "on paper" ideas that compounds problems when put into practice. Heat, revs, and fuel must all be carefully managed as gasoline doesn't burn the same way as diesel. Mazda is mum on details, but the automaker seems confident that the issues have been sorted. If the new engines do indeed make it to market with HCCI, Mazda will have out-engineered GM, Daimler, and Hyundai, all of which have tried and failed to develop HCCI engines in a cost-effective package. With the market moving towards electrification, it's interesting to see Mazda still focusing so heavily on traditional internal combustion gasoline engines. It's an indication of where they see the market heading for the next few years. Although the automaker has been hesitant to move forward with hybrid and electric powertrains, Nikkei also reports that Mazda will begin mass production of EVs in 2019. Related Video:

2023 Honda Pilot and the promise and pitfalls of PHEVs | Autoblog Podcast #766

In this episode of the Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Associate Editor Byron Hurd for a chat about the new 2023 Honda Pilot and its beefed-up TrailSport model. After that, we get a winter-weather long-term update on the BMW 330e care of Greg. Then, it's on to news. The big headlines this week were the brand-new Mazda CX-90 crossover and word that Genesis plans to build its outrageous (and expensive) X convertible concept. Is the world ready for a Bentley fighter from Korea? Send us your questions for the Mailbag and Spend My Money at: Podcast@Autoblog.com. Autoblog Podcast #766 Get The Podcast Apple Podcasts – Subscribe to the Autoblog Podcast in iTunes Spotify – Subscribe to the Autoblog Podcast on Spotify RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown Cars we're driving 2023 Honda Pilot 2022 BMW 330e xDrive  News 2024 Mazda CX-90 three-row SUV revealed, with your choice of inline-6 or PHEV The ravishing Genesis X Convertible Concept is going into production Feedback Email – Podcast@Autoblog.com Review the show on Apple Podcasts Autoblog is now live on your smart speakers and voice assistants with the audio Autoblog Daily Digest. Say “Hey Google, play the news from Autoblog” or "Alexa, open Autoblog" to get your favorite car website in audio form every day. A narrator will take you through the biggest stories or break down one of our comprehensive test drives. Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

Driving the Maserati MC20 and BMW i7 | Autoblog Podcast #802

In this episode of the Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Senior Editor, Green, John Beltz Snyder and Road Test Editor Zac Palmer. They're amped up about the BMW i7 and Maserati MC 20 they've all been driving. They also opine about the BMW M3 CS and 2024 Ford Mustang. The Japan Mobility Show (formerly Tokyo Motor Show) is coming up, and there have been some interesting reveals and teasers, including the Nissan Hyper Urban and Hyper Adventure concepts, some neat kei car concepts from Daihatsu, a Miata-inspired EV concept from Mazda and an electric sports coupe concept from Subaru. Finally, they discuss the wild situation surround last weekend's Formula 1 Qatar Grand Prix. Send us your questions for the Mailbag and Spend My Money at: Podcast@Autoblog.com. Autoblog Podcast #802 Get The Podcast Apple Podcasts – Subscribe to the Autoblog Podcast in iTunes Spotify – Subscribe to the Autoblog Podcast on Spotify RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown Cars we're driving 2023 BMW i7 2023 Maserati MC20 2024 BMW M3 CS 2024 Ford Mustang GT Japan Mobility Show preview Nissan Hyper Urban and Hyper Adventure concepts Daihatsu kei car concepts Possible next-gen Mazda Miata Subaru electric sports car Formula 1 Qatar Grand Prix recap Feedback Email – Podcast@Autoblog.com Review the show on Apple Podcasts Autoblog is now live on your smart speakers and voice assistants with the audio Autoblog Daily Digest. Say “Hey Google, play the news from Autoblog” or "Alexa, open Autoblog" to get your favorite car website in audio form every day. A narrator will take you through the biggest stories or break down one of our comprehensive test drives. Related video: Green Motorsports Podcasts Tokyo Motor Show BMW Ford Maserati Mazda Nissan Subaru