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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, GM supposedly working together on PHEVs, autonomous cars

Back in 2013, Honda and General Motors announced that they would work together on hydrogen fuel cell vehicles (pictured). The stated goal was to develop "commercially feasible fuel cell and hydrogen storage" for around 2020, but there was no discussion at the time that any actual H2 vehicles would come out of the program. Things are evolving with that partnership, maybe. There are rumors circling this week that the two automakers are now working together on plug-in hybrid vehicle technology and autonomous technology. The supposed new facet to the GM-Honda partnership doesn't just focus on a powertrain, reports The Yomiuri Shinbun, but also in getting suppliers to lower prices because now you have two automakers ordering parts together. Building plug-in hybrids and fuel cell cars together might be a thing, too, Yomiuri says. The 2013 hydrogen partnership was made between two leaders in the field (the announcement press release talks says, "GM and Honda rank No. 1 and No. 2, respectively, in total fuel cell patents filed between 2002 and 2012." But if these new rumors are true, then it's more of a bit of catch up for Honda (which had a great but unsuccessful car in the Accord PHEV) while GM gets more tech to better challenge Toyota. That's how the Yomiuri presents it, anyway. A Honda spokesperson told AutoblogGreen that, "Honda and GM's collaboration in the co-development of next generation fuel cell systems is making good progress. Engineers are discussing how we might expand the relationship utilizing each other's strengths, but there is no fixed plan regarding specific areas or timing." News Source: Yomiuri Shinbun via Inside EVs Green Rumormill GM Honda Hydrogen Cars PHEV partnership

Recharge Wrap-up: Volkswagen Sustainability Council meets, Zee.Aero flying car spotted?

The Volkswagen Sustainability Council held its inaugural meeting in Berlin. Made up of nine international experts, the council will advise VW and take action on its own as it sees fit. In the meeting, the council decided that in 2017 it will focus on tackling CO2 emissions, planning for post-2025 regulations, and assisting the automaker's "transformation from car manufacturer to mobility services provider," as VW Chairman Matthias Muller puts it. Volkswagen has approved 20 million euros (about $21.75 million) in funding for Sustainability Council projects for its first two years. "We are fully aware of the large transformation that lays ahead Volkswagen Group," says George Kell, Sustainability Council Chair and Founding Director of UN Global Compact. "We were invited to be part of this journey and are very much looking forward on being actively involved in the development of this journey." Read more at Green Car Congress, or from Volkswagen. Honda plans to ramp up its share of hybrids sold in the US. In response to increasingly strict emissions standards, the company wants electrified vehicles (including hybrid, plug-in hybrid, battery electric, and fuel cell vehicles) to make up two-thirds of Honda and Acura sales in US by 2030. Some analysts are skeptical, though. Christopher Richter of CLSA Asia-Pacific Markets says that dealers are telling Honda they don't want hybrids. "Unless there's a change in what dealers want, I don't think they are going to get there that fast," Richter says. Read more at Automotive News. Witnesses report spotting what could possibly be the Zee.Aero electric aircraft at Hollister Airport in California. Zee.Aero, a startup funded by Google cofounder Larry Page, has a hangar at that airport, where a photo was taken of the aircraft in question. The craft is said to be capable of vertical takeoff and landing and can fit in a one-car garage, earning it the "flying car" moniker. Eyewitness Saul Gomez described the aircraft as "quiet" and "hovering 20, 25 feet off the ground." Read more at Electrek, and watch the interview at Mercury News. Related Gallery 2017 Honda Accord Hybrid: First Drive View 26 Photos News Source: Green Car Congress, Volkswagen, Automotive News, Electrek, Mercury NewsImage Credit: Copyright 2016 Sebastian Blanco / AOL Auto News Green Acura Honda Volkswagen Green Automakers Electric Hybrid recharge wrapup