[汽车之家 新闻]
日前有海外媒体报道称,马自达计划推出第二代创驰蓝天汽油发动机,新机型的油耗表现将比其前辈机型提升30%。实现这一提升的重点在于,第二代创驰蓝天汽油机并未采用传统汽油机的火花塞点燃式燃烧方式,而是采用了无火花塞的HCCI(均质压燃)燃烧技术。据悉,首先搭载此款新机型的新一代马自达3,其油耗表现有望低至3.3L/100km。
HCCI均质压燃燃烧技术的工作原理与柴油机相类似,即无需火花塞点燃油气混合气,而是依靠活塞的上行将混合气压燃。采用这项技术的第二代创驰蓝天汽油发动机将降低尾气排放,同时提升燃油经济性。据悉,新机型有望首先搭载于下一代马自达3(即国内的马自达3 Axela昂克赛拉)车型上,而该车型预计将于2018年推出。
外媒称,搭载第二代创驰蓝天汽油发动机的马自达3,其油耗水平可以达到“30km/L”,换算为我们常用的“百公里油耗”即为3.3L/100km,这样的成绩比起许多混合动力车型还要更低。另有消息称,马自达还将计划于2019年和2021年相继投产纯电动车型和插电式混动车型。
carsguide原文
Mazda’s next-generation SkyActiv petrol engine is expected to slash fuel consumption figures by another 30 per cent by ditching spark plugs.
It has been six years since Mazda adopted their SkyActiv suite of fuel efficient technologies, and it seems that they are preparing to up the ante with a new-generation of SkyActiv technologies. According to a report from the Nikkei Asian Review, Mazda will be introducing a new petrol engine at the end of next year in the facelifted Mazda3 that boasts a 30 per cent improvement in fuel efficiency.
Based on current estimates, the new engine in the Mazda3 will be able to deliver a fuel consumption figure that is close to 3.3L/100km. By comparison, the best official combined figure achieved by the current 3 is 5.7L/100km, while even the Toyota Prius carries a 3.4L/100km rating.
The new petrol engine, which is described to be part of the company’s second-generation SkyActiv suite of technologies, is said to operate on a new form of combustion that does away with spark plugs and ignites the fuel using the engine’s compression to achieve a more efficient combustion instead - similar in practice to that of a diesel engine.
Mazda’s engineers has also hinted that HCCI combustion serves as a key development to enable the return of the rotary engine.
This form of internal combustion is known as HCCI (homogeneous charge compression ignition), and Mazda says their new engine will be the first practical application of the technology should it be ready by the target date mentioned in the report.
In theory, HCCI combustion is very similar to knocking or pinging (when unburnt fuel spontaneously ignites due to excessive heat and pressure before the combustion cycle takes place), though in the case of the HCCI the combustion is supposed to be intentional and controlled.
Not only does HCCI achieves a leaner burn, it is also said to produce less exhaust emissions, particularly when it comes to the notorious NOx emissions, which would enable such engines to pass future emission regulations.
Since combustion is achieved through pressure and heat, rather than spark ignition, commercialising HCCI engines has been difficult with several issues that need addressing such as cold starting, and more importantly, potential higher engine wear.
That being said, due to its efficiency and cleaner emissions, HCCI combustion has been pursued by numerous manufacturers, most notably Mercedes-Benz which rolled out the F700 Concept with a HCCI engine back in 2007, though none has been able to deliver a production-ready engine so far.
HCCI has been part of Mazda’s development plan for their SkyActiv range of engines, with the technology expected to make its debut in the company’s second-generation of SkyActiv engines. As previously reported, Mazda’s engineers have also hinted that HCCI combustion serves as a key development to enable the return of the rotary engine with its efficient combustion and the absence of a spark plug.
For now Mazda Australia has no comment on the report, citing that at this stage it is too early to tell if and when a HCCI SkyActiv engine will be available for commercial sale, nor if the engine will make its debut in the facelift Mazda3 as stated in the report.
原文链接
http://www.carsguide.com.au/car- ... -boost-report-50373
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Hard to believe
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如果真的是 那么真的是逆天了!
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mazda从skyactiv起的方向就很明确了:加大压缩比,压榨汽油机扭矩,把汽油机进化往柴油机的路上走。只是不知道如何解决汽油压燃特别困难的问题,在已经用了巨大的421系统后如何还能再进一步加倍的抑制爆震。
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网红
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怎么就把30km/L换算到3.3L/100km的?
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有问题?
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如果真这么牛,再加上混合动力,是不是每百公里的油耗会降到2.5升?
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这让我等刚买的马三并且开在7.5L/100km的人情何以堪,
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新机型的油耗表现将比其前辈机型提升30%
--- 3.3/1-30% = 4.7升/百公里
你现在的油耗是4.7升/百公里
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......汗......
我的说明书上写着5.6L好像....
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不明觉厉,真心希望这是真的
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我不明白为啥不上太阳能板
房子上都有
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马自达各种黑科技
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希望是真的。
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这个略假,估计是在翻译的时候漏掉了什么重要的信息
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给手机充电?
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感觉不太现实啊
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各位质疑的话看英文网站就是了
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google mazda hcci 是真的
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如果是真的这就有点逆天了,但是爆震是其中潜在一个问题啊,要如何解决呢?
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号称50%的热效率,压缩比18:1,超过丰田的Atkinson循环的41%,32km/1L的油耗。。。。。
问了欧洲同事的可能性,反正理论测试(台架测试)一切Claim皆有可能,实际路测先呵呵着。。。
另外50%热效率是个很大的Claim,忽悠媒体群众OK,要被业内认可,要通过三家不同的发动机测试机构测试结果,才可成为新标杆。
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市区8.5 甚至更高
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小马就是爱放卫星。。。
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7.5就挺不错的,科鲁兹都得9- 10
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油价要降
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