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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

Toyota tops Consumer Reports best, worst used car values

We often mock Toyota for building boring, soulless cars, but a new study by Consumer Reports suggests that regardless of whether that's true, the company has some of the best used cars on the market. In its report on used cars from 2004-2013, the Japanese automaker had 11 vehicles among its brands on the list - more than any other automaker.
CR breaks the list down by cost and vehicle size, and Toyota has at least one entry at every price point and in nearly every segment. To score a recommendation, a vehicle had to perform well in the magazine's initial tests and score above-average reliability results. It also tried to only suggest cars with electronic stability control. Of the 28 recommended vehicles, Honda/Acura had the second most mentions at six, and Ford, Hyundai and Subaru managed two each.
The Detroit brands also made it to the list, but not in a positive way. Consumer Reports compiled a list of 22 vehicles it wouldn't recommend because "they have multiple years of much-worse-than-average overall reliability." General Motors had the most unrecommended models on the list at six, but Chrysler and Ford weren't far behind, with five cars each from their brands not making the grade. The full list of recommendations is available on CR's website.

Honda favoring turbo over hybrid for US-market Vezel

While Honda gears up to unveil the new Fit to the US market at the Detroit Auto Show next month, back in its home market, the car's crossover cousin is just going on sale. The Vezel was unveiled at the Tokyo Motor Show last month and already has a three-month waiting list in Japan, where Honda projects that 90 percent of customers will opt for the hybrid version. Not so in the United States, however.
When the Vezel reaches American showrooms, there'll be a number of key differences. For starters, it will carry a different name, though Honda isn't saying what that will be. For another, it will be built for North American consumption at Honda's new plant in Mexico, roughly half of whose production capacity is reportedly being allocated to the new crossover. And finally, it'll have a different engine.
In Japan the Vezel is being offered with a 1.5-liter four-cylinder engine, with or without electric assist. Honda won't offer the hybrid version here - at least not initially - but it is preparing to offer a turbo option. Although it has yet to announce US specifications and options, the 1.5-liter turbo four (also unveiled at the Tokyo show) is considered a stronger likelihood than the 1.0- or 2.0-liter versions.