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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 S660 Concept portends a new kei car for 2015

Apart from a tiny, one-paragraph mention in a press release about the Honda show stand in general, the company hasn't said very much about its completely charming S660 Concept. The model would seem very much to be a look ahead at a possible successor to the Beat kei car for Japanese customers, though we've been told that we shouldn't expect any kind of translation or product for the American market (despite certain key executives wanting more sports cars in the US).
Honda tells us only that the S660 roadster features "advanced styling" and "new initiatives such as Super cockpit interior." We do think that the confines of the S660 look particularly driver-focused, with a carbon fiber steering wheel clad in soft leather, very racy looking vented seats and instruments tilted to keep the pilot constantly informed.
Honda President and CEO, Takanobu Ito, also touched on the S660 in his remarks at the press conference, saying that the model "embodies the freewheeling thinking of young Honda engineers, who want to make a cool car that is unique to Honda." Takanobu also said that the concept will be developed into a production model for 2015, which is great news for Japanese drivers.

2022 Honda Civic Si, Lincoln Corsair Grand Touring | Autoblog Podcast #708

This episode of the Autoblog Podcast features Editor-in-Chief Greg Migliore and News Editor Joel Stocksdale. They talk about cars they've been driving, including the 2022 Honda Civic Si, 2022 Lincoln Corsair Grand Touring plug-in hybrid and 2022 Subaru Ascent. After that, they spend someone's money. The subject specifically is whether a Ford Maverick is right for the person, or if they should maybe get something else. Autoblog Podcast #708 Get The Podcast Apple Podcasts – Subscribe to the Autoblog Podcast in iTunes Spotify – Subscribe to the Autoblog Podcast on Spotify RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown What we're driving2022 Honda Civic Si 2022 Lincoln Corsair Grand Touring 2022 Subaru Ascent Spend my money Feedback Email – Podcast@Autoblog.com Review the show on Apple Podcasts Autoblog is now live on your smart speakers and voice assistants with the audio Autoblog Daily Digest. Say “Hey Google, play the news from Autoblog” or "Alexa, open Autoblog" to get your favorite car website in audio form every day. A narrator will take you through the biggest stories or break down one of our comprehensive test drives. Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.