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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 discontinuing Euro Accord, no replacement in sight

Honda has built two Accords for many years. There's the one we're familiar with here in the United States, and then there's the Accord sold in markets like Europe and Australia, known here in the US as the Acura TSX. But just like Acura did with the TSX, the Euro-market Accord has been discontinued.
The news comes from The Motor Report in Australia, which is reporting that the Accord Euro will be discontinued in 2015. Sold Down Under alongside the US-market model, the discontinuation of the Aussie car indicates an end to Honda's midsize sedan efforts in Europe, where there is no obvious replacement for the four-door and wagon models.
According to TMR, Honda Australia Director Stephen Collins indicated that focus will be placed instead on the US market "wide-body" model, as it's known. That said, this decision doesn't sound like it's sitting too well in Oz.

2015 Honda Fit shapes up for America [w/video]

The Fit may be Honda's smallest (and, starting at $15k, most cost-effective) model, but it has never sold in quantities that even approach those of the brand's larger offerings - at least not in the United States. Where American Honda typically sells hundreds of thousands of Civic and Accord models - even CR-V crossovers and Odyssey minivans - annual sales for the Fit typically amount to tens of thousands. But the Japanese automaker hopes to expand its sales in the segment with the introduction of the new 2015 Honda Fit.
Having launched the all-new model several months ago in the Japanese Domestic Market, Honda is presenting the new Fit to the North American market here at the Detroit Auto Show. By and large, it's the same model that will be sold around the world, having been redesigned with more aggressive styling, a larger footprint on the road and more interior space. Only now it will be built for North American consumption at Honda's new plant in Celaya, Mexico, where the automaker plans to also build its new Vezel crossover (or whatever it'll be called here).
The North American Fit ditches the hybrid setup offered in the JDM model in favor of a new Earthdreams 1.5-liter four-cylinder engine with direction injection and i-VTEC valve timing to help it deliver 130 horsepower and 114 pound-feet of torque. That's 13 more horses and 8 more torques than the previous model, and the engine can be paired to either a six-speed manual or Honda's new continuously variable transmission. With the latter, Honda projects the Fit will get 33 miles per gallon in the city, 41 on the highway and 36 on the combined cycle. Lighter and more refined than the outgoing model's powertrain, the new engine sits in a lighter and more rigid frame as well, which Honda expects will earn it top ratings from the National Highway Traffic Safety Administration and Insurance Institute for Highway Safety.