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Since its sale in 1958, the Super Cub has been
loved by people all over the world. With its history of evolution and improvement
that extends over 40 years, this product has achieved a high fuel economy, running
75.4 km1 )-130 km2 )
on a liter of gas. Honda has been improving the fuel economy of its motorcycles
and scooters, mainly focusing on 4-stroke engine technologies, to provide a satisfactory
lineup of products with less CO2 emissions and better
economical efficiency.
1) Measured internally by Honda at a specified driving
mode (ECE R40)
2) Measured at a constant speed of 30 km/h |
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As the “Clean 4” series, Honda is introducing scooters
with high environmental performance into the market. One of the important themes
for these scooters is “economy” or the improvement of fuel efficiency.
The Crea Scoopy, released one year after the GIORNO Crea in 2000, represents Honda’s
efforts for further improvements of the new models for fuel economy. |
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Honda adopted a newly developed water-cooled, 4-stroke 50 cc
engine for the GIORNO Crea. The water cooling system stabilizes combustion and
improves the compression ratio, thereby contributing to higher fuel economy. The
Crea Scoopy, through improvement of the 4-stroke 50 cc engine and of various devices,
including the starter, has been made more compact. Further, Honda has used computer
technology to optimize the specifications of engine components, has improved the
precision of the machining technologies and reduced friction to increase the output
and improve fuel economy. To further improve fuel economy, we are now developing
a small fuel injection system for motorcycles to optimize the air-fuel ratio,
and are making efforts for the practical use of various technologies to provide
more advanced scooters. Fuel economy (at a constant speed of 30 km/h) for the Smart Dio Z4 released in 2004 has improved by 7% compared with the previous model equipped with a carburetor-type 4-stroke engine. |
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The reduction of body weight greatly contributes to the improvement of fuel economy. In September 1998, Honda, jointly with its other cooperative suppliers, developed a welded structure made of aluminum die cast and extruded aluminum materials (this technology is known to be difficult), and in the same year adopted highly rigid aluminum die-cast frames for the CBR 600F. These frames were subsequently applied to other models, including the GIORNO Crea. For the Crea Scoopy, the frames for the GIORNO Crea were applied to the front part after making some modifications to the frames and new frames were designed for the rear part to further reduce the body weight. Also, the material for the radiator tank was changed to resin. As a result, the entire body weight has been reduced by 6 kg. |
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