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2015 Pikes Peak Hill Climb: Practice Day 1

Based on what we learned from the first day of practice for the 2015 Pikes Peak International Hill Climb, the quickest race pace up the paved road to more than 14,000 feet above sea level may not be from internal combustion locomotion anymore. "If it all goes well, and the planets align, [under nine minutes] shouldn't be out of the question," said Paul Wilding, team manager for Nobuhiro "Monster" Tajima's Rimac Automobili Monster Sport E-Runner entry. Wilding added that if Tajima's car held up during the week it could finish first overall, which would be the first time an EV takes the overall crown at the hill climb. Last year, the gap between overall winner Romain Dumas' Norma M20 RD Limited and the fastest EV was just over two seconds. In the 2014 race, Tajima finished third in his class. "We think this car is the fastest way up now," said Wilding. "There's no affect from the altitude – this car is a monster, our driver is a monster." The practice, which isn't mandatory but is sanctioned by race officials, concluded Tuesday morning with a few surprises ahead of Sunday's race. Tajima will be racing for the fourth consecutive year in the all-electric modified division. Wilding said today's conditions weren't ideal and the race Sunday could be more challenging than initially expected. "It was a lot bumpier than we expected today," he said. "But today means nothing. It was all [reconnaissance]. Tomorrow means everything." The Honda ARX-04B LMP2 prototype brought to Pikes Peak had a difficult start to the week. Honda Racing spokesman Eric Mauck said the car struggled and didn't run in practice Tuesday. "We're looking for data and research more than anything else," Mauck said. "We're not going for Sebestain's record this year, we're just looking to gather information for years to come." Colorado-native, Honda driver, and Formula E racer Justin Wilson will pilot the LMP2 up the mountain Wednesday – assuming the car is ready. "He's obviously a guy that Honda thinks very highly of. Anytime we have an opportunity to put Justin behind the wheel of anything we want to," Mauck said. Honda driver Tetsuya Yamano, who is driving an all-electric Honda CR-Z in the exhibition class, echoed Mauck's assessment. "We're not making a racecar," Yamano said through an interpreter. "This is part of [research and development] and we're looking to get as much data back to engineers in Japan as possible ...

Autoblog Podcast #387

Episode #387 of the Autoblog podcast is here, and this week, Dan Roth, Steven Ewing and Michael Zak talk about more General Motors recalls, upgrades and a diesel for the 2015 Ford Focus ST, and the BMW M235i scoring ahead of the Porsche 911 and Chevrolet Corvette Stingray in Consumer Reports testing. We start with what's in the garage and finish up with some of your questions, and for those of you who hung with us live on our UStream channel, thanks for taking the time. Check out the new rundown below with times for topics, and you can follow along down below with our Q&A. Thanks for listening! Autoblog Podcast #387: The video meant to be presented here is no longer available. Sorry for the inconvenience. Topics: GM recalls 8.4M more cars in North America Ford Focus ST upgrades and diesel CR says M235i is better than 911 In the Autoblog Garage: 2014 Jeep Grand Cherokee EcoDiesel 2014 Honda Accord Coupe V6 6MT Long-Term 2015 Subaru WRX 2014 Subaru XV Crosstrek Hybrid Hosts: Dan Roth, Steven Ewing, Michael Zak Runtime: 01:35:26 Rundown: Intro & Garage - 00:00 GM Recalls - 26:26 2015 Ford Focus ST - 41:56 BMW M235i - 50:24 Q&A - 59:16 Get the podcast: [UStream] Listen live on Mondays at 10 PM Eastern at UStream [iTunes] Subscribe to the Autoblog Podcast in iTunes [RSS] Add the Autoblog Podcast feed to your RSS aggregator [MP3] Download the MP3 directly Feedback: Email: Podcast at Autoblog dot com Review the show in iTunes Government/Legal Podcasts BMW Ford GM Honda Jeep Subaru Safety Diesel Vehicles Performance bmw m235i

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