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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

One lucky customer got the first HondaJet for Christmas

The wait is finally over – for one fortunate customer, at least. After an extensive gestation period, the Honda Aircraft Company has delivered the first HondaJet to its eagerly awaiting new owner. And with it, the Japanese industrial giant has stepped into yet another territory of motorized transportation. Though Honda first started experimenting with aircraft as far back as the 1980s, the development of the HondaJet as we now know it dates back to the late 1990s when designer Michimasa Fujino – now chief executive of the Honda Aircraft Company – first penned its form. The company has been working on getting it into the air and into customer hands ever since, with that process culminating now on no less fitting a day than just this past Christmas Eve. Following the type certification received from the Federal Aviation Administration earlier this month, the handover of the first customer aircraft took place at the company's headquarters at Piedmont Triad International Airport in Greensboro, NC. That's where Honda will be producing all its aircraft, performing service and maintenance, and training its customer pilots, which has already begun on its on-site, full-motion flight simulator. A network of dealers handles sales across North America, South America, and Europe. The company did not disclose the identity of the first customer, but suffice it to say it was not Jenson Button – even though he is, once again, driving a Honda-powered F1 car. The HondaJet HA-420 is classified as a very light business jet, measuring 42 feet and 7 inches long with a 39'9" wingspan. Power comes from a pair of turbofan engines produced by Honda and General Electric, each good for over 2,000 pounds of thrust and together are capable of propelling the aircraft to a cruising speed of 435 miles per hour or a top speed of 483 mph. That makes the HA-420 far and away the fastest vehicle Honda makes across numerous modes of transportation. In addition to cars, trucks, and jets, the company produces motorcycles, ATVs, marine engines, and lawnmowers, making it one of the most diverse manufacturers in the industry. Related Video: Honda Aircraft Company Begins HondaJet Deliveries Dec 23, 2015 - GREENSBORO, N.C. Honda Aircraft Company today announced it has begun deliveries of the HondaJet, the world's most advanced light jet. The company delivered the first aircraft today at its world headquarters in Greensboro, North Carolina.

Honda working on 'power exporter' to go with fuel-cell vehicle

The bad news, as we've previously reported, is that Honda's first production hydrogen fuel-cell vehicle won't debut until 2016, a bit later than expected. The good news is that the automaker may produce a device that will let that FCV's motor power up other devices as well. So it's a tradeoff of sorts. The company is producing what it calls the Power Exporter Concept. Put simply, it's a device that can connects to the fuel-cell vehicle and produce AC power (the picture makes it look fairly small, but dimensions weren't disclosed). The device has a maximum output of 9 kilowatts. Honda isn't saying much else about the device, which was announced along with further details of the company's upcoming fuel-cell concept vehicle. Still, it's heady yet not terribly surprising stuff from a company that's long been a big player on the portable power generator industry. Honda recently said its first production fuel-cell vehicle would see the light of day in early 2016 instead of 2015. The futuristic-looking vehicle will have a power output of about 130 horsepower and will be able to have its hydrogen tank filled up in less than five minutes. Take a look at Honda's press release below. Honda Unveils All-New FCV CONCEPT Fuel-Cell Vehicle - Striving to Realize a CO2-free Society by Combining FCV with an external power feeding device and Smart Hydrogen Station - TOKYO, Japan, November 17, 2014 - Honda Motor Co., Ltd. today unveiled, for the first time in the world, the Honda FCV CONCEPT, a concept car for an all-new fuel-cell vehicle (FCV), and the Honda Power Exporter CONCEPT, a concept model for an external power feeding device that enables AC power output from the FCV with maximum output of 9 kW*1. The all-new FCV that will be based on this concept model is scheduled to go on sale in Japan by the end of March, 2016 and subsequently in the U.S. and Europe. In addition to the FCV and external power feeding device, Honda will further promote the application of the Smart Hydrogen Station (SHS), a packaged hydrogen station unit that adopts Honda's original high-differential-pressure electrolyzer. In this way, Honda will work toward the forthcoming hydrogen society under three key concepts – "generate," "use" and "get connected" – and strive for the early realization of a CO2-free society.