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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

Autoblog Minute: Honda drops Takata, airbag maker fined $70M

US regulators hit Takata Corporation with a substantial fine, and Honda drops the embattled parts supplier. Autoblog's Adam Morath reports on this edition of Autoblog Minute. Show full video transcript text [00:00:00] US regulators hit Takata with a substantial fine, and Honda drops the embattled supplier. I'm Adam Morath and this is your Autoblog Minute. In the latest developments surrounding Takata's deadly airbag scandal, Transportation secretary Anthony Foxx released a statement accusing Takata of providing investigators with quote, "incomplete, inaccurate, and misleading information." Foxx also announced that a 70 million dollar fine, [00:00:30] which could grow to 200 million should Takata Corporation not meet certain conditions. The National Highway Traffic Safety Administration exercised its authority, issuing a mandate to speed up repairs citing 2019 as the deadline to fix recalled cars. Japanese automaker Honda dropped Takata in the wake of the scandal. The company said in a statement: "Honda expects its suppliers to act with integrity at all times and we are deeply troubled by this apparent behavior by one of our suppliers." We'll continue to report [00:01:00] as the story evolves. For Autoblog, I'm Adam Morath. Autoblog Minute is a short-form video news series reporting on all things automotive. Each segment offers a quick and clear picture of what's happening in the automotive industry from the perspective of Autoblog's expert editorial staff, auto executives, and industry professionals.

Florida teens flee police, ram deputies with stolen car

Three Hudson, Florida teens are in juvenile detention today after leading law enforcement on a dangerous high-speed chase in a stolen Honda. According to WFTS, the three unnamed youths were allegedly breaking into cars on the evening of Saturday, April 30 in the Bayonet Point neighborhood in Hudson, FL. Pasco County sheriff's deputies responded to calls about their activities, and when the deputies arrived on the scene, the teens hopped into a stolen Honda and sped off. This prompted a high-speed chase throughout central Pasco County involving both PCS deputies and officers from the Florida Highway Patrol. Bodycam footage released by law enforcement shows officers chasing the reckless teens, ages 13, 14, and 15, throughout the county at speeds approaching 100 miles per hour, where they crashed through barbed wire fences and hopped curbs in an effort to elude pursuit. Eventually, law enforcement cornered the teens on a dead end street, but they refused to give up. In an effort to escape, the driver smashed into four police cruisers before officers finally stopped them. The three alleged car thieves were cuffed and taken into custody on the scene. Luckily, no one was injured during the chase. This is not the youths' first run-in with police. According to the Pasco County Sheriff's office, the three teens, two of whom are brothers, are well-known serial offenders. They are facing a number of charges, including aggravated battery on a law enforcement officer, and are currently being held at the Pasco Juvenile Detention center. Related Video: News Source: WFTS Government/Legal Weird Car News Honda Driving Police/Emergency police chase