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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 replaces CEO Takanobu Ito with Takahiro Hachigo

At its upcoming shareholders' meeting in June, Honda is set to make a raft of changes to its senior personnel, including new board members, directors, auditors and operating officers. But the most pivotal of the new appointments will see the replacement of its president and chief executive. That job currently belongs to Takanobu Ito, who will step down in June and hand the reins over to Takahiro Hachigo, subject to ratification by the shareholders. Hachigo-san has been with Honda since 1982, rising up the ranks and holding a series of key executive and R&D posts with the Japanese automaker in locations around the world – including here in the United States, where he spearheaded development of the original Odyssey minivan and directed the company's American R&D center. He subsequently headed Honda's European operations and currently serves as its most senior officer in China. He's 55 years old. He takes over from Ito-san after a tumultuous period for Honda. Ito, 62, joined Honda in 1978 and similarly rose through the R&D ranks, holding some of the same positions along the way that Hachigo would later, albeit more focused on the company's operations at home in Japan. Ito took over as president and CEO in 2009, steering Honda through a difficult period marked by fluctuating currencies, the tsunami disaster of 2011 and flagging quality issues that have forced Honda to issue unprecedented recalls, focusing much criticism on Ito's leadership. Honda recently recalled millions of vehicles that were fitted with Takata's faulty airbag inflators, which had the unpleasant tendency to spew shrapnel at consumers. Ito will remain on board as a director and advisor, but what we'll be most interested to see is the direction in which Hachigo will take the company. Under Ito's leadership, Honda has brought back performance icons like the NSX and Civic Type R, launched innovative environmental technologies, delved into aerospace with the HondaJet and re-entered Formula One. One of Hachigo's first priorities will undoubtedly be to restore the company's reputation for quality, but we'll have to wait and see what (if any) sort of new and exciting developments he'll spearhead once he takes office. Honda Motor Co., Ltd. Announces New President & CEO Tokyo, February 23, 2015 --- Honda Motor Co., Ltd.

Honda Fit loses Recommended rating from Consumer Reports

Thanks to its poor performance in the most recent round of Insurance Institute for Highway Safety crash testing, where it received the lowest overall score in the small-overlap test, Consumer Reports has bumped the Honda Fit from its "Recommended" list. When a car gets bumped from the magazine's coveted ranks, it's usually cause for concern. This is not one of those times.
As there is a new Fit barreling towards dealerships for an on-sale date this spring, we wouldn't pay too much credence to the current car's demotion. It's expected that the next-generation Fit should pass the test with flying colors, as CR is quick to point out that newer Hondas have traditionally done very well in the tricky small-overlap crash testing.
Of the subcompact cars tested by the IIHS, only the Kia Rio, which netted a "Marginal" score overall, is a Consumer Reports "Recommended" vehicle.