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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, Subaru airlifting parts to bypass port labor diputes

It should be abundantly obvious that a vital element in building cars is actually having the components on hand to assemble them. A labor dispute on the West Coast between the International Longshore and Warehouse Union and management is not making that quite so easy for some Japanese automakers. Work slowdowns at the ports have pushed Honda and Subaru parent Fuji Heavy Industries into flying some parts into the country. The two automakers began shipping by airplane late last month to avoid production delays, according to Bloomberg, but it has been an expensive solution. Subaru's chief financial officer said the decision cost around $60 million more per month than sending components by cargo ship. They aren't the only companies dealing with the problem, either. Toyota reportedly stopped overtime assembly at some of its factories here because of the delays in getting parts, according to Bloomberg. The dockworkers have been negotiating on a new contract since May 2014, and the current offer on the table to them has offered a 3 percent raise, according to Bloomberg. Although, the union is reportedly considering another slowdown at 29 ports along the West Coast in the coming days. News Source: BloombergImage Credit: Nick Ut / AP Photo Auto News UAW/Unions Honda Subaru Toyota shipping port labor dispute

Honda Project 2&4 is our kind of sidecar sideshow [w/video]

Honda makes cars and Honda makes bikes. It makes a whole lot of other things, too, but those are the two areas of expertise that have given rise to the thoroughly enticing Project 2&4 concept. It's one of the smallest vehicles unveiled here at the 2015 Frankfurt Motor Show, but also among the most enticing. The result of a global in-house design competition, Project 2&4 was envisioned by the company's motorcycle studio in Asaka and brought to fruition with help from the automotive studio in Wako. It's powered by the 1.0-liter V4 engine Honda developed for MotoGP competition, driving 212 horsepower and 87 pound-feet of torque through a six-speed, dual-clutch transmission. With less than 900 pounds to motivate, that adds up to blistering performance of the kind we'd give most anything to experience firsthand. The 14,000-rpm redline would be enough to make our heart sing all on its own, but the novelty of Project 2&4 is its design. As you can see, it hands the driver's seat and controls off the side, with room for a hold-on-for-dear-life passenger seat on the other side. The neo-retro styling is inspired by the company's RA272 grand prix racer from the Sixties, but gives up on the center driving position for an altogether more original configuration. The result looks ready to take on the likes of the Ariel Atom and BAC Mono... to say nothing of the curbs of Suzuka and Fuji. If only Honda were (able) to put it into production.