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Developing cleaner diesel technology to combat global warming |
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The next-generation diesel engine Honda announced in May 2006 represents a major step in our ongoing pursuit of innovation in engine technology.
Diesels are more fuel efficient and emit less CO2 than gasoline engines. However, due to their emission of particulate matter (PM) and nitrogen oxides (NOx), in Japan they are not considered to be particularly environmentally responsible. But recent advances in fuel injection and exhaust gas treatment technologies have made diesel emissions considerably cleaner. In Europe, where diesels have long been considered a next-generation clean engine, interest in diesel technology has risen along with the increase in environmental consciousness. Today over half of the passenger cars on the European market are diesels.
An examination of the CO2 emissions associated with the life cycle of gasoline-powered vehicles reveals that while emissions generated in vehicle use represent the largest proportion of emissions, those generated during gasoline refinement represent the second largest proportion (see graphic below). A key merit of diesel technology is that the CO2 emissions generated in refining diesel are substantially less than those generated when refining gasoline.
As global warming captures broader public attention, interest in diesel technology will likely grow in Japan and North America, where most vehicles are currently gasoline-powered. |
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| Kenichi Nagahiro |
| Automobile R&D Center |
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Using energy wisely |
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The popularization of diesel technology would significantly contribute to more efficient use of energy resources.especially in Japan, which imports virtually all its oil. This is particularly the case given that the proportions of gasoline, diesel and other petrochemical products derived from the refinement of crude oil are constant, so in Japan, where the vast majority of cars run on gasoline, increased use of diesel would increase efficiency. The popularization of diesel vehicles could help ensure that the oil Japan imports is used efficiently.
Diesels can also run on liquid natural gas, liquid fuels that can be derived from coal and biomass, canola and other forms of biodiesel. This flexibility is a feature that makes the future transition to diesels compelling. Honda’s pursuit of cleaner diesel technology is thus driven not only by concerns over global warming, but also by a broader perspective that takes into account the efficient use of energy resources and the utilization of alternate forms of energy. |
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| Average CO2 emissions in the life cycle of a Honda Civic |
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| Calculations performed in Japan based on Honda’s Life Cycle Assessment. |
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| • Honda CSR in Action (Corporate Communications) |
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| Since many people consider diesels loud, smelly and dirty, I think it’s essential to clearly and consistently communicate encouraging facts about them. In the spirit of innovation and initiative that Honda values, I plan to find new ways to convey our message of driving pleasure.and to make sure the benefits of our advanced diesel technologies are truly appreciated. |
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| Keitaro Yamamoto |
| Corporate Communications |
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| • Honda CSR in Action (European Sales) |
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| In the rapidly expanding diesel market in the UK, Honda diesel vehicles have a strong presence. Customers appreciate not only their superior fuel efficiency but also the fact that they’re as quiet, easy to drive and powerful as gasoline-engine vehicles. Honda is all about the spirit of challenge. We will continue to push and develop new environmentally responsible technologies and vehicles to produce the best result for our customers. |
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| Tom Gardner |
| Marketing, Honda UK |
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