Needs Work , Exporters Special , No Reserve on 2040-cars

Auto blog

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

2016: The year we talked about autonomy a bunch | Autoblog Podcast #497

This week on the Autoblog Podcast, Mike Austin and David Gluckman take a look back at one of the biggest topics of 2016: autonomous driving. The thing is, there was a lot of news about autonomous driving, but not much in the way of autonomous cars you can buy. They also talk about what they've been driving lately - there was a good turbocharged compact car and a not-so-good turbocharged compact car. And then we round out the year with a quick Spend My Money. The podcast will take a break next week, but we'll be back in the new year with reports from CES and the 2017 Detroit Auto Show. And we're lining up some fun guests for future recordings. The rundown is below. Remember, if you have a car-related question you'd like us to answer or you want buying advice of your very own, send a message or a voice memo to podcast at autoblog dot com. (If you record audio of a question with your phone and get it to us, you could hear your very own voice on the podcast. Neat, right?) And please send trivia questions! You'll get the honor of stumping your fellow listeners, and we'll thank you too. Autoblog Podcast #497 Topics and stories we mention 2017 Hyundai Elantra Sport 2017 Nissan Sentra SR Turbo 2016 Honda Accord V6 (The sedan, but here's our Quick Spin of the coupe for reference) Autonomous Driving Rundown Intro - 00:00 What we're driving - 02:40 Rants (metal trim on steering wheels, learn how your car works) - 14:25 Looking back at autonomous driving in 2016 - 21:10 Spend My Money - 31:20 Total Duration: 37:46 Get The Podcast 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 on iTunes Podcasts Honda Hyundai Nissan Car Buying Technology Emerging Technologies Autonomous Vehicles nissan sentra

2016 Honda Civic Coupe is a functional, fuel-efficient fastback

Listen, everyone was all excited when Honda introduced the new Civic Sedan, because it was a huge step forward over the previous generation. But while everyone was busy praising the new styling, more refined interior, and turbocharged engine, they were secretly pining for a more literal translation of the New York Auto Show concept car. People wanted the Civic Coupe. We wanted the Civic Coupe. And ahead of the 2015 Los Angeles Auto Show, Honda has delivered. The new Coupe shamelessly apes the Civic Concept from New York, featuring a similarly svelte front end. In back, the fastback roofline and overarching taillight compete for attention without appearing busy or unnecessary, while the profile presents a more rebellious take on the greenhouse and character lines of the current Accord Coupe. Like the Civic Sedan, the Coupe gets an overhauled interior that puts emphasis on material quality and focuses on tech. That includes soft-touch, contrasting details, as well as more practical stuff like the optional TFT main gauge and seven-inch touchscreen display. Expect the powertrain options to mirror the Civic Sedan, with a naturally aspirated, 2.0-liter, four-cylinder as a base entry and a turbocharged, 1.5-liter four-pot as the higher-end engine. Outputs and fuel economy figures are identical to the four-door Civics, while CVTs remain the transmission of choice – the only way you can snag a manual box is with the 2.0-liter engine. If you were one of the fans hoping Honda would see the light and at least offer the turbo with a manual trans for Coupe buyers, we understand that this is rather devastating news. We feel your pain. And we're sure you, like us, are looking forward to sportier iterations of Honda's little coupe, specifically the Si and Type R. Honda has provided an array of images of the new two-door, although you can count on our live images in the near future. Take a peek up top for the stock stuff, and then scroll below for the official press release. Dynamically Styled, More Powerful and Fuel-Efficient 2016 Honda Civic Coupe Makes First Public Appearance at Los Angeles Auto Show Nov 17, 2015 - TORRANCE, Calif.