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New gasoline engine will not use spark plugs like a diesel

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  • New gasoline engine will not use spark plugs like a diesel

    http://www.autoblog.com/2017/01/16/m...1&noRedirect=1

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

    The automaker is confident there is still life left in internal combustion.

    ​​​​​​​

    Reese Counts

    Homogeneous charge compression ignition, or HCCI, is the black art of 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.

  • #2
    Trump needs to snub the UN and the whole unscientific notion of "carbon tax", and contend with the very powerful people who are destroying the planet (mega corporations and evil agencies). Else this interesting engine will have a very short future. And we need to contend with the powers influencing mankind for evil.

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    • #3
      Originally posted by Baruch View Post
      Trump needs to snub the UN and the whole unscientific notion of "carbon tax", and contend with the very powerful people who are destroying the planet (mega corporations and evil agencies). Else this interesting engine will have a very short future. And we need to contend with the powers influencing mankind for evil.
      Very good comment Barry. The carbon tax is a tax meant to punish the US and distribute the wealth of the people from conservative states to liberal states.

      These same people who CLAIM to be concerned about the planet are using that as an excuse to take the freedom away from people. Diesels are better for the environment but they are against them. That is why Toyota cars were killing people because their wiring harnesses had a glitch in them ( but this would be almost impossible to find in individual cars and they would had to replace the whole wiring harness in millions of cars) That would have bankrupted Toyota. But Toyota makes hybrids and and electric cars so they got preferential treatment. They are playing the game that these men want them to play.

      But VW and other German cars that make diesels get punished. VW tried to break their silly rules for diesels and they got punished because they are bucking the rules of these men. They want diesels to go away. BUT all heavy trucks use diesels because they use less fuel and they last longer with less maintenance.

      These same men will try to kill this engine because they want hybrid and electric cars. Electric cars are NOT green. Until they cost the same as gasoline or diesel they will not be green. The cost is a direct indicator of how much energy a car takes to build it. It costs more to build a car than it does to run it for many years. The buyers of hybrids will never get the premium they paid for the car`back in fuel savings. SO they are NOT green.

      Cost is a direct indicator of how much energy and materials were used to build the car.

      The exception is cars like Ferrari that cost so much because of the extensive labor and design work into a product that they only make a few of instead of millions.
      Last edited by Lou Newton; January 18, 2017, 10:52 AM.

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