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April 2014: The ramping-up-for-summer edition

Americans appear to be gearing up for further increases in US gas prices, as green-car sales last month had their largest year-over-year gains of 2014. Domestic customers bought almost 56,000 hybrids, plug-ins and diesels in April, marking a 2.6 percent increase from April 2013. Plug-in sales were particularly strong, jumping 41 percent from a year earlier, as sales of the Chevrolet Volt extended-range plug-in and Nissan Leaf and Tesla Model S battery-electric vehicles all showed gains. April's big winner among the automakers was Honda, moving 1,442 units of its newer Accord Hybrid And April's big winner among the automakers was...Honda? Yes, Honda, which has long operated in the advanced-powertrain shadow of fellow Japanese automakers Toyota and Nissan, came up big by moving 1,442 units of its newer Accord Hybrid. And while sales of the Civic Hybrid, CR-Z and Insight all fell, the Accord Hybrid drove Honda to boost its green-car sales by 78 percent from a year earlier to 2,839 units. Per usual, Nissan and Tesla also showed year-over-year gains. Nissan boosted Leaf sales by 7.8 percent to 2,088 units. And while Tesla won't release its first-quarter results until May 7, the California-based automaker would've increased Model S sales by 34 percent to 2,300 just by maintaining its fourth-quarter 2013 sales pace. Volkswagen and low-volume advanced-powertrain vehicle makers like Audi, Porsche and Daimler AG's Smart division also fared well in April. VW increased its diesel and Jetta Hybrid sales by 25 percent to 9,583 units. Audi's diesel sales quadrupled to 2,088 units. Smart sold 203 units of its newer Smart ED battery-electric vehicle. Such gains more than offset sales declines from General Motors, Ford and Toyota, though Toyota's April was less painful than previous months. GM's big mild-hybrid sales declines more than offset the 19 percent increase in Chevy Volt sales to 1,548 units and the sales of 491 Chevrolet Cruze Diesel vehicles. All told, GM's green-car sales declined 25 percent to 3,103 units. Fusion Energi Plug-in Hybrid sales doubled and C-Max Energi PHEV sales jumped 28 percent. Ford's green-car sales were down 12 percent to 7,554 vehicles. While Fusion Energi Plug-in Hybrid sales doubled and C-Max Energi PHEV sales jumped 28 percent, Fusion Hybrid sales were little-changed while C-Max Hybrid sales tumbled 50 percent to 1,586 units.

Honda recalling 100k more vehicles to replace airbag inflators

Additional recalls surrounding Takata's faulty airbag inflators seemed to be at an end, and the major issue was getting all of the affected models promptly repaired. However, Honda is voluntarily expanding its safety recall to include another 100,000-plus vehicles. The automaker is adding 88,549 examples of the 2008 Pilot, 10,868 units of the 2004 Civic and 5,454 vehicles of the 2001 Accord to replace the driver's side front inflator. According to documents submitted to the National Highway Traffic Safety Administration, Honda found these vehicles through its process of matching Takata part numbers to individual VINs to make sure every potentially affected vehicle was found. Both model years of the Accord and Civic are already included in the campaign, but the 2008 Pilot is new to the list. The company is clear in its announcement that there are no reports of inflator ruptures in the crossover, though. This expansion takes Honda's airbag-related recall total to roughly 5.5 million vehicles in the US. When these airbags rupture, they can spray metal fragments with enough force to injure or even kill people. The automaker also has an advertising campaign to get the word out to owners that having this problem repaired is vital to their safety. Statement by American Honda Regarding Expansion of National Safety Improvement Campaign: Driver's Front Airbag Inflator Supplied by Takata Mar 19, 2015 - TORRANCE, Calif. 2008 Pilot and certain 2001 Accord and 2004 Civic vehicles added under new NHTSA campaign number 15V-153 Honda will voluntarily expand its December 2014 national Safety Improvement Campaign (NHTSA No. 14V-351) affecting certain 2001 through 2011 Honda and Acura vehicles in the United States to include 88,549 Pilot vehicles from the 2008 model year, 10,868 specific 2004 Civic vehicles and 5,454 specific 2001 Accord vehicles. While certain 2001 Accord and 2004 Civic vehicles were previously included in 14V-351, no 2008 Pilot models were included before this addition. Honda has not received any claims of airbag inflator rupture in 2008 Pilot models. Since this expansion of the national Safety Improvement Campaign is taking place in a new year, it will be identified separately by the NHTSA as No. 15V-153, but the same repair, replacement of the driver front airbag inflator, free of charge, will apply to these additional vehicles nationwide. With this expansion, a total of approximately 5.5 million vehicles will be covered by 14V-351 and 15V-153 combined.

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