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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 flaunts freshened 2014 Civic Coupe at SEMA

Honda took the wraps off its 2014 Civic Coupe (red car pictured above) and 2014 Civic Si (gray car in the gallery below) at SEMA today, revealing a mid-cycle refresh for each model. The standard Civic coupe benefits from several cosmetic enhancements, while the Civic Si gets the bulk of its improvements under the hood - precisely where the enthusiasts want them.
The best-selling Civic Coupe sports a new front fascia that is "fun and sporty," says the automaker. The more aggressive snout is a step in the proper direction, as its new shape and exclusive grille design gives the two-door a distinctive appearance that sets it apart from its sedan sibling. The rear end follows the same design language, as the lower portion of the urethane bumper gains some character - its smooth surface has been resculpted and recontoured. Newly available 18-inch wheels complete the exterior transformation.
The 2014 Civic Si benefits from a larger spoiler and new wheels, but the big news is in the powertrain. Honda has massaged the 2.4-liter i-VTEC engine and opened up the exhaust system. As a result, output climbs to 205 horsepower (up from 201) and torque increases to 174 pound-feet (up from 170). The power gains aren't extraordinary, but they should allow the coupe to hit 60 miles per hour from a standstill in about six seconds flat and still return over 30 mpg on the open road. Scroll down for the official release.

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.