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Honda patents engine with different cylinder displacements

A basic rule of engine design states that the displacement of a cylinder is equal to the engine's total displacement divided by its cylinder count. Honda, according to a recently surfaced Japanese patent, is looking to break that rule with an engine containing cylinders of different sizes. We've done our best to translate it from patent-ese. The idea is that different-sized combustion chambers give more flexibility when any combination of cylinders are deactivated, or rested. Because the different numbers can be combined in various ways, it provides more and smaller increments than would an engine with equal-displacement cylinders. Take a 2.0-liter four-cylinder, for example. Following the golden displacement rule, each of the four cylinders has a volume of 500 cc, giving displacement increments of 500 cc when any cylinder is deactivated. But suppose instead that the four cylinders displace 300, 425, 600, and 675 cc, respectively. This would give the engine 15 available displacements instead of just four, and the spacing between each option would be far less than 500cc. As a result, those different virtual displacements would provide more adjustment between power and efficiency than a cylinder-deactivation system can on a conventional engine. Honda's patent describes cylinders with equal bore size, with the displacement from cylinder to cylinder varying based on the crank throw radius – the longer the throw, the longer the stroke and the larger the displacement of that particular combustion chamber. The patent describes how the cylinder sizes would need to be arranged to spread the load on the crankshaft and presumably limit vibration that would be introduced by the different pulse magnitudes. If we're interpreting things correctly, the largest cylinder (the one with the longest crank throw radius) sits in the middle of the bank with the smaller ones alternating on either side as they decrease in displacement. This concept is described for multi-cylinder inline and V-type engines of various sizes. The patent was filed in March of 2014 and published in January of this year. Whether or not this arrangement will reach production is of course unknown, but the advantages in terms of both efficiency and power seem promising. Related Video: News Source: Japan Patent Office via Auto Guide Green Honda Fuel Efficiency Technology patent

Honda rolls out various oddities for 2015 Tokyo Auto Salon

On January 9 the doors at the Makuhari Messe in Chiba will open for the 2015 Tokyo Auto Salon. and you know what that means, boys and girls: that's right, all sorts of strange mod jobs. Not to be confused with the Tokyo Motor Show that's Japan's main automotive expo, the Tokyo Auto Salon is the Nipponese equivalent of SEMA. Honda is among the first to announce its lineup for the show, and, well... let's just say they're not all hideous and leave it at that. The H brand has got a whole array of customized machinery in store for the tuner expo, starting with the new N-Box Slash that just went on sale in Japan as the company's latest Kei car. One version of the tall wagon on the tiny wheelbase is obviously inspired by America, or at least a Japanese impression of what American car culture is like: it's decked out in red with racing stripes, flame graphics, a highway road sign and strange checkerboard wheels. Another N-Box Slash dubbed the Cyber Code:89 concept looks like something from anime, all decked out in futuristic graphics and glowing lights. A third example is rather more tastefully done up in teal with yellow accents. Of course Honda hasn't put all its eggs in the Slash basket, turning its attention as it has to other models in the JDM lineup. There's a retro N-One concept with a low-key grey and white exterior but with a zany multicolor interior, a tasteful white N-WGN with Modulo accessories, an Odyssey Absolute 20th Anniversary edition minivan, a take on the NM4 cruiser bike that'd look right at home in Akira and – one of our favorites from the lot – a Mugen take on the Honda Legend that we know as the Acura RLX. Whether your plans will take you to Tokyo for the show or not, you can scope 'em all out in the high-res image gallery for a closer look.

Honda launches new JDM Odyssey, Mugen chips in [w/video]

Honda has just released its new Odyssey minivan for the Japanese Domestic Market, and it has plenty of style and room for up to eight people. Honda factory tuning company Mugen will also offer performance and styling parts for the fifth-generation minivan.
The Odyssey is offered in B and G trim with a 173-horsepower, 2.4-liter I-VTEC four-cylinder mated to a continuously variable transmission with optional paddle shifters and seven 'speeds.' The more upscale Odyssey Absolute features sportier styling, and but all models are available in either front-wheel drive or all-wheel drive.
The interior follows a "modern suite" design concept inspired by luxury hotels, with wood trim and comfortable-looking seats. Additionally, customers can choose between models with a lift-up second-row seat or a lift-up front passenger seat. Honda highlights the Odyssey's low floor height and high ceiling, which accentuates the spacious interior. The low floor also endows the minivan with a step height of 30 centimeters (11.8 inches) at the rear sliding door to afford easy entry.