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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 bundles up CR-V Special Edition with optional extras

The 2016 Honda CR-V Special Edition is based on the LX trim level, but packs a bunch of extra equipment. It gets 17-inch alloys, a two-tone paint job, tinted rear windows, and a security system. That's about the sum total of what makes this special edition special, but then Honda isn't asking much of a premium for it. The new Special Edition trim slots in between the base LX and the higher-level EX – and below the top-spec EX-L and Touring models. It'll be available in either front- or all-wheel-drive configurations, with prices starting at $24,395 for the former and $25,695 for the latter. That's the MSRP without taxes, registration, or the $880 destination charge. What that boils down to is a modest $800 premium over the base model, which doesn't strike us as a whole lot to ask for the extra equipment – never mind the "special edition" handle. Perhaps most telling, though, is that Honda hasn't released any specific photos for the CR-V Special Edition. It has, however, given us a fresh batch of the 2016 model altogether. And you can check it out in the gallery above, along with the details in the press release below. AMERICA'S BEST SELLING SUV CONTINUES MARKET LEADERSHIP WITH INTRODUCTION OF NEW SPECIAL EDITION 2016 HONDA CR-V Coming off a year of record sales and numerous industry accolades, the exceptionally well received Honda CR-V returns for 2016 with a Special Edition trim offering exterior and security upgrades over LX Oct 6, 2015 - TORRANCE, Calif. -- After a major refresh for 2015 that brought a new powertrain, significantly enhanced exterior and interior styling and a long list of new standard and available features, the 2016 Honda CR-V returns with a new Special Edition (SE) trim and a lineup with a starting Manufacturer's Suggested Retail Price (MSRP) of $23,595.1 The new Special Edition CR-V is positioned above the LX trim by adding larger 17-inch alloy wheels with an exclusive two tone finish, second-row and rear privacy glass, and security system. With only an $800 premium over the LX, the SE represents a high-value proposition for the premium look and additional feature content. In addition to the highly prestigious Motor Trend Sport/Utility of the Year honor, the refreshed 2015 CR-V garnered numerous industry accolades. These include: - 2015 ALG Residual Value Award: Best Compact Utility - 2015 Kelly Blue Book Best Buy: Small SUV/Crossover - Kelly Blue Book 2015 Top 10 Best Resale Value award - U.S.

Honda issues stop sale on 2016 Civic with 2.0-liter engine

Honda has issued a stop sale on the 2016 Civic with the 2.0-liter four-cylinder for a problem that might allegedly lead to engine failure. The company also plans to recall and inspect the examples already with customers. Honda spokesperson Chris Martin tells Autoblog that the issue doesn't affect any Civics with the 1.5-liter turbocharged engine. "While the specific details of this action are still being determined, American Honda has provided preliminary information to the NHTSA and intends to provide more details in a formal notification to NHTSA on Friday, February 5," Martin said. After the National Highway Traffic Safety Administration acknowledges the details, Honda will issue an official statement about the problem. A post on the CivicX forum purports to have a Honda document detailing the fault. Some of the 2.0-liter engines may have missing or miss-set piston pin snap rings, which could cause damage to the pistons and other internal parts. The issue reportedly affects roughly 34,000 examples of the 2016 Civic. If the document from the CivicX forum are accurate, dealers will use a borescope to inspect the pin snap rings on the potentially affected engines. According to the forum, replacement parts are not yet available, and Honda expects to notify customers about the recall in March. Autoblog drove the turbocharged version of the 2016 Civic late in 2015 and came away fairly impressed. We loved the new engine and quiet interior but weren't so enamored with the CVT. In any case, if you're in the market for a new Civic, you may now have one more reason to consider the new turbo mill. Related Video: