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FJR Motorcycle Forums
Technical & Mechanical Problems
MPG sensitive to intake air temp
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<blockquote data-quote="Ignacio" data-source="post: 556636" data-attributes="member: 434"><p>Lot's of possibilities I can think of...and many of them NEPRT candidates. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /> </p><p></p><p>When it's colder it takes longer for the engine to get to optimal operating temperature. Mileage on shorter rides where the engine cools back down would be lower than if you took a much longer ride.</p><p></p><p>Colder air is denser air...so more fuel is being used. This is largely offset by the increased power in the more dense charge, but maybe not wholly.</p><p></p><p>At the same it's colder air resistance is then greater than it's warm and motorcycles have more coefficient of drag than cars.</p><p></p><p>Another one that I'm guessing you already compensate for, but if not....less air pressure in tires in colder temperatures and increased rolling resistance.</p><p></p><p>Typical mileage reduction in the winter is about 10% in my experience and what I've read before.</p></blockquote><p></p>
[QUOTE="Ignacio, post: 556636, member: 434"] Lot's of possibilities I can think of...and many of them NEPRT candidates. ;) When it's colder it takes longer for the engine to get to optimal operating temperature. Mileage on shorter rides where the engine cools back down would be lower than if you took a much longer ride. Colder air is denser air...so more fuel is being used. This is largely offset by the increased power in the more dense charge, but maybe not wholly. At the same it's colder air resistance is then greater than it's warm and motorcycles have more coefficient of drag than cars. Another one that I'm guessing you already compensate for, but if not....less air pressure in tires in colder temperatures and increased rolling resistance. Typical mileage reduction in the winter is about 10% in my experience and what I've read before. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
MPG sensitive to intake air temp
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