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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

Pedestrian deaths increase; cell-phone distractions may be culprit

In Philadelphia, city officials are running a public-safety campaign that implores road users to simply "Put. Phone. Down." In Florida, a similar advertisement reminds people, "Alert Today, Alive Tomorrow." What's unusual about these messages is that they target pedestrians. Amid widespread concern about distracted drivers on American roads, there's a growing body of research that suggests distracted walking is equally problematic. Pedestrians engrossed in their phone, text or Tinder conversations are stepping into intersections without so much as a glance at oncoming traffic. That may be one reason pedestrian deaths are increasing. They jumped 15 percent in a five-year period between 2009 and 2013, according to a study released this week by the Governors Highway Safety Association, with 4,735 killed in 2013. In the same time, overall traffic fatalities have fallen by 3.4 percent. Pedestrian deaths now comprise 14 percent of all traffic fatalities, and approximately one pedestrian death occurs every two hours in the United States. Alcohol is still a top culprit – it's involved in 49 percent of pedestrian deaths on either the part of driver or walker – but as cities rush to implement a wave of slower speed limits, wider sidewalks and street medians to counter pedestrian deaths, there's new focus on holding pedestrians accountable for eliminating distractions. "Undoubtedly, motorists are responsible for many pedestrian accidents," said a July newsletter from the National Motorists Association. "But pedestrians must also assume responsibility for their own safety." This week's report from the GHSA cites growing research that suggests pedestrians aren't yet doing their part. At 20 high-risk intersections, 26 percent of pedestrians wore headphones, 15 percent were texting and 13 percent talked on the phone, according to a 2013 University of Georgia study. More recently, a William Paterson University study issued earlier this year found more than 25 percent of New York City pedestrians were distracted by either their phones or headphones. Half of the pedestrians who crossed with a "Don't Walk" signal were distracted. "Getting smashed at the bar? Don't get smashed walking home." - Minnesota public-safety campaign.

Top Gear hosts' classic bikes head for auction

The BBC seems quite certain that Top Gear is making a return to television in 2016, but James May and Richard Hammond are extremely unlikely to be among the hosts. Instead, the two of them are probably following Jeremy Clarkson into any future endeavors, but for the time being that leaves the Little One and the Slow One unemployed. They won't have to worry too much about spending money in the meantime, though, because Bonhams is selling 12 motorcyles owned by the former TG stars on April 26. "Just because I'm unemployed now doesn't mean I have to get rid of everything. I was going to sell these bikes anyway. And those paintings, and my collection of Scalextric cars. Honest," May joked to Bonhams. However, the auction house was clear in its announcement that the cycles were consigned to the Spring Stafford Sale in the UK months before the Top Gear fracas. Eight of the bikes come from May's collection and are generally small-bore, Japanese models. They include a 49cc 1974 Yamaha FS1-E and a 1976 Suzuki AP50 E, but there's also a very attractive 1980 Ossa 250cc MAR trials bike. If you're looking for a bit more performance, Hammond's four offering include a 2010 Norton Commando 961SE and a 1970 Triton 500cc cafe racer. He's also selling a Yamaha FS1-E, though a year newer than May's. Unfortunately the Vincent Black Shadow and Honda RC30 the hosts are riding in these photos aren't part of the lots, but the whole list of the available models can be read in the announcement below and checked out in the gallery, above. Bonhams Spring Stafford Sale will include 12 motorcycles belonging to Richard Hammond and James May, former presenters of the popular motoring programme, Top Gear. May and Hammond discussed the sale of their respective motorcycles in their usual humorous manner: "Just because I'm unemployed now doesn't mean I have to get rid of everything," said May. "I was going to sell these bikes anyway. And those paintings, and my collection of Scalextric cars. Honest". Hammond added: "As a serious collector of motorcycles, it's important to review one's stable regularly, and the Bonhams Stafford sale is the ideal opportunity to move bikes on and possibly acquire new ones. I also have a canoe, and some Wharfedale hi-fi speakers, if anyone's interested".