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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

IndyCars parade across Golden Gate Bridge for Justin Wilson [w/video]

Seeing IndyCars driving on public roads is a rare treat, especially on an iconic landmark like the Golden Gate Bridge. Unfortunately, the exciting sight came on a very somber occasion. On August 27, a parade of five racecars sped across the famous span in large part to memorialize fellow driver Justin Wilson. In an incredibly touching scene, teammate Marco Andretti led the pack, and he was behind the wheel of Wilson's number 25 Andretti Autosport Honda. "It was an honor to drive Justin's car. It was emotional for sure," Andretti said to the IndyCar Series. Behind him were Graham Rahal, Will Power, and Josef Newgarden. James Hinchcliffe was in a two-seater IndyCar to deliver the Aston Cup to the season finale at Sonoma Raceway. Two safety vehicles were also part of the procession, and they were flying Justin Wilson flags. Wilson passed away earlier this week after being struck in the head by a carbon-fiber nosecone from a crash ahead of him during the ABC Supply 500 at Pocono Raceway. Since then there has been an outpouring of support from the motorsport world for the 37-year-old racer's family. You can watch a clip of the driver's crossing the Bridge, below. News Source: NBC Bay Area, IndyCarImage Credit: Eric Risberg / AP Photo Motorsports Honda Racing Vehicles Videos IndyCar andretti autosport james hinchcliffe sonoma raceway golden gate bridge josef newgarden

America was the unexpected theme at the 2017 Detroit Auto Show thanks to Trump

President-elect Donald Trump was not in attendance at this year's Detroit Auto Show, but it sure seemed like he was the target audience for many of the press conferences and announcements surrounding the event. Several manufacturers chose to play up existing and future commitments to the US in general and American jobs specifically in their presentations to the press, and we're pretty sure that has everything to do with Trump's recent targeting of automakers on Twitter. To us, it seemed automakers were going on the offensive to try and preempt any future tweet-shaming for investing in auto manufacturing anywhere but the US. The pro-America sentiment started the week prior to the auto show, with Ford announcing that it would build several future electrified vehicles at its Flat Rock Assembly Plant in Michigan and also cancel a $1.6 billion factory planned for Mexico. Ford announced the two items on the same day, but the reality is that they likely have no relation to each other; the Mexican plant is being skipped because the company doesn't need the extra capacity to build the Ford Focus right now. Trump was still happy to share the news on Twitter. Then, on Sunday, FCA announced it would invest $1 billion in manufacturing plants in Ohio and Michigan to produce the new Jeep Wagoneer, Grand Wagoneer, and Wrangler-based pickup. It's not as though those potential new jobs were on their way out of the US, necessarily, but FCA took the opportunity to mention that plant upgrades at the Warren Truck Plant would allow the company to build Ram heavy duty trucks, which are currently assembled in Mexico, there. CEO Sergio Marchionne confirmed that Trump and his proposed tariffs had nothing to do with the decision. We certainly believe that, but we also have to believe that the timing of the release, positive outcome for America, and zero gain for Mexico were all orchestrated. Again, Trump sent out a victory tweet as if this had been his doing. Ford then used its press conference at the show on Monday to reiterate the plans for Flat Rock and also confirm that the Ford Bronco and Ranger nameplates will be returning to the US market, and that both will be built at a plant in Michigan. Announcements of manufacturing locations are usually aimed at the UAW, which certainly has a stake in these things, but again this one was broadcast to the auto show crowd in general.