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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 names first woman, foreigner to its board of directors

General Motors may have made headlines when it recently appointed the industry's first female CEO, but Honda has long lagged woefully behind the times when it comes to the diversity of its top management. In fact, its entire board has until now been composed entirely of Japanese men, with not a foreigner or a woman in sight. But as Reuters reports, that's all changing with the nominations to its latest board.
The slate of new directors named to Honda's board includes one Hideko Kunii, a gender-equality advocate and engineering professor from the Shibaura Institute of Technology. A graduate of the University of Texas at Austin, Kunii spent the bulk of her career at Japanese electronic imaging company Ricoh. Alongside Kunii, Honda has also named Tomoko Mizoguchi to the board as responsible for the company's South American operations, making him the first foreigner to serve on the company's board of directors. (Well, almost: Mizoguchi was born in Brazil, but of Japanese ancestry.)
The appointments follow the recent switch Honda made in its official language policy from Japanese to English, signaling a shift in outlook for a company that has long stuck to traditional Japanese business models. Honda was the first of the major Japanese automakers to begin manufacturing in the United States, and has long relied on hiring local managers to run its regional operations around the world. It has, however, resisted placing foreigners on its board of directors until now, relying instead on senior male managers promoted from within its ranks to serve on its board. This in comparison to Toyota, which has seven foreigners and one woman on its 68-member board of directors, and Nissan, which has fifteen foreigners (including its chief executive) and one woman on its 58-member board.

Honda updates Takata airbag recall status for some models

The net enveloping vehicles in the Takata airbag inflator recall just seems to keep widening. Honda is now updating its previous campaign to revise the status for even more models that were ever registered in (or originally sold in) 13 high-humidity US states and territories.
All of these vehicles were included in the company's earlier repairs. However, at the time this fix was titled "a safety improvement campaign." This latest action upgrades that condition to "a formal recall," according to Honda's official statement. The models include: the 2003-2005 Honda Accord, 2001-2005 Civic (pictured above), 2002-2005 CR-V, 2003-2004 Element, 2002-2004 Odyssey, 2003-2005 Pilot, 2006 Ridgeline, 2003-2005 Acura MDX and the 2005 Acura RL. All of these need to have their passenger-side, front airbag inflator replaced, and the recall affects Alabama, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, the US Virgin Islands, Saipan, Guam and American Samoa.
As with the rest of these affected vehicles, it's possible in a collision for the inflator to rupture spraying metal shrapnel at occupants. There are at least 139 injuries attributed to this problem from a variety of automakers so far. Among this latest population of vehicles, Honda says there have been no confirmed injuries or fatalities related to these exploding inflators.