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  1. #1 Honda 125cc engine boasts 25% efficiency boost 
    Senior C-Moto Guru euphonius's Avatar
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    This is not really China-related, except in the sense that genuine technological advancement is something that China's motorcycle industry still seems incapable of doing.

    Then again, even though it's Honda, it's hard for me to wrap my brain around a 25% performance improvement in the internal combustion engine, which, after all, has been around for maybe 130 years and has shown virtually no potential for such huge efficiency gains.

    (It's really depressing to think that about 80% of the gas you put in your engine is wasted in the form of heat, rather than used for forward propulsion, and this has been consistent since the Model T. Even more depressing is the fact that "advanced" internal combustion vehicles come equipped with a special device -- the radiator -- whose sole intent is to wick away into the atmosphere the precious heat energy that was generated with 80% of the petrol you purchased and poured into your tank. I digress...)

    cheers!

    Honda shows green scooter engine going on sale next year targeting global commuters

    By Associated Press, Published: September 26

    TOKYO — Honda has developed a new fuel-efficient motorcycle engine that will be used in a scooter that goes on sale globally next year.

    Honda Motor Co. said Monday that the new engine for 125-cc scooters is 25 percent more fuel efficient than similar conventional ones.

    It targets people who use scooters to commute not only in Japan but also in Southeast Asia and other nations, according to Tokyo-based Honda, which also makes the Odyssey minivan and Civic sedan.

    Honda developed a series of little ideas that worked incrementally, rather than one major breakthrough, to reduce friction in engine parts such as new types of pistons as well as better control over combustion and improved electronic starters.

    Honda did not give a price for the new scooter, but acknowledged that keeping prices low through cost cuts is the crucial challenge for the business.

    Honda also said it was planning green technology for a bigger motorcycle engine that will be sold globally, but targeting especially Europe.

    Honda did not say when the midsize motorcycle will go on sale. Details will be announced at the Milan and Tokyo auto shows next month, it said.

    Honda has a strong motorcycle division and controls nearly half of the global market in commuter scooters.

    That has helped drive growth and profits, compared to rival Japanese automakers including Toyota Motor Corp. and Nissan Motor Co. that don’t have such businesses.

    Copyright 2011 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.


    © The Washington Post Company
    Honda develops new fuel-efficient engines for 2-wheel vehicles

    TOKYO (Kyodo) -- Honda Motor Co. said Monday it has developed new fuel-efficient engines for scooters and medium-sized motorcycles to expand sales in the global market.

    Honda, which aims to expand scooter sales in Southeast Asia, the world's largest two-wheel vehicle market, improved the fuel economy of the engine for 125-cc scooters by about 25 percent compared with that of conventional engines for scooters with the same displacement, it said.

    The new engine for 125-cc scooters is also capable of being mounted on a variety of scooters with different wheel sizes, in addition to its enhanced durability and quietness, Honda said. The company plans to launch the engine globally from 2012.

    "We have developed the new engine as a global standard engine with an eye to marketing it in Southeast Asia, which is the world's largest market, and advanced countries," said Honda Senior Managing Officer Tatsuhiro Oyama at a news conference.

    Honda aims to produce more than 1 million units of the engine for 125-cc scooters, as it expects demand for such scooters will grow in Southeast Asia as well as Europe and Japan, it said.

    The new engine for medium-sized motorcycles with displacement of 500 to 750 cc has a fuel economy exceeding 27 kilometers per liter and about a 40 percent improvement over other sports models in its class, Honda said.

    Honda plans to manufacture the engine for midsize motorcycles at its plant in Kumamoto Prefecture and export finished motorcycles to overseas markets, Oyama said.

    (Mainichi Japan) September 26, 2011
    jkp
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  2. #2 Re: Honda 125cc engine boasts 25% efficiency boost 
    MCM Chinese fellow td_ref's Avatar
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    Its well known petrol engine has less than 50% of efficiency. Most of 4 cylinders bike has more than 4l/100km fuel consumption. 125cc-250cc single, 2-4L/100km. You get more kilometers at same amount of petrol from small engine.
    For cars, turbo engine has higher efficiency than natural aspirated. Hybrid is even better at fuel economy.
    Like battery technology, petrol engine has room to improve.

    to reduce friction in engine parts such as new types of pistons
    the news tech has apply to cbr250rr engine? I read somewhere it consume petrol as low as 2.5L/100km.
    同志仍需努力
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  3. #3 Re: Honda 125cc engine boasts 25% efficiency boost 
    Senior C-Moto Guru MJH's Avatar
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    The new engine packs a bunch of improvements: low friction and light weight: offset cylinder, lighter piston, unique sleeves that reduce oil consumption and improve cooling, smaller and lighter rollers, optimized cam profile, improved radiator design, reduced oil capacity, improved bearings, more compact combustion chamber, redesigned intake port that has been smoothed, optimal ignition timing, intelligent electric controls, improved elasticity of the drive belt. .



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  4. #4 Re: Honda 125cc engine boasts 25% efficiency boost 
    Senior C-Moto Guru MJH's Avatar
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    Honda will be displaying its new 700cc engine in Milan next month. That engine is claiming a 40% improvement over similar 2-cylinder engines in the 500-750cc class.

    It will come as a six speed manual and also a second generation dual clutch on scooters, one of which will be the Integra model.

    It will be introducing three new models with this engine, the engine is designed for real world urban commuting, offering power in the normal ranges of touring and related urban ridding.

    It will be the top-class in efficiency and environmental consciousness.
    Dual Clutch version

    Manual 6 Speed

    Integra
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  5. #5 Re: Honda 125cc engine boasts 25% efficiency boost 
    Senior C-Moto Guru euphonius's Avatar
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    These really do look like major innovations. Those cutaway engine views look like no engine I've ever seen before.

    Good on Honda for putting in the heavy R&D time!

    That scooter looks like quite the sled!

    cheers
    jkp
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    2000 KLR650 "Feezer Ablanalp" (in California)
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  6. #6 Re: Honda 125cc engine boasts 25% efficiency boost 
    Senior C-Moto Guru MJH's Avatar
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    I would bet that the 700cc engine will be brought to the market as a new Transalp...


    To compete against the new Suzuki V-Strom...
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  7. #7 Re: Honda 125cc engine boasts 25% efficiency boost 
    Senior C-Moto Guru
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    Nice, subscribed.
    Too bad Chinese bikes are light years behind.
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  8. #8 Re: Honda 125cc engine boasts 25% efficiency boost 
    Senior C-Moto Guru MJH's Avatar
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    Another likely model to receive the new 700cc engine is the Deauville, these advancements are definitely the result of changes or anticipation of fourth coming EU regulations on emissions.
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  9. #9 Re: Honda 125cc engine boasts 25% efficiency boost 
    Senior C-Moto Guru MJH's Avatar
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    Honda unveiled their new technology bikes in Milan this month…

    The dual-clutch offers options for shifting on all models, not only the Integra scooter but also on the NC700S and NC700X versions, all of which also share the same frame designs.

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  10. #10 Re: Honda 125cc engine boasts 25% efficiency boost 
    Senior C-Moto Guru MJH's Avatar
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    Nice feature..the bikes have a 14 liter fuel tank, large enough for a 250 mile range. Access to the tank is inside of the locked compartment.


    These are not performance bikes, they are designed for fuel economy and are supposed to have very strong low end torque. The duel clutch is an option not standard for the bikes. Without that option they are sort of lack luster and appliance like, or they come off as that with only 48hp? They are definitely going after commuters with this line.
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