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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 and Acura EVs will officially adopt the Tesla NACS port in 2025

Honda and Acura are the next manufacturers to jump on the NACS bandwagon, and while we heard the first official rumblings in Monterey, today is Honda’s (and AcuraÂ’s) official announcement. The first EV that Honda will launch with the NACS port will be in 2025. Just like every other automaker making the switch, Honda says it reached an agreement with Tesla to adopt the charging port. After that first Honda with the NACS port launches, every new Honda and Acura EV model in North America will have the same port. However, just like many others, Honda and Acura will have EVs on sale prior to 2025 that will ship with the current Combined Charging System (CCS) port. These models will be designed to be compatible with NACS use via a charging adapter, so youÂ’ll ultimately be able to charge them via Tesla Superchargers one day. Outside of this Tesla NACS agreement, Honda says the news today doesnÂ’t change its joint venture with seven other automakers to build an EV charging network and expand the number of charging stations available for all. Related video: What's new for the 2023 Honda Accord

KBB 2013 Brand Image Awards has some obvious and oddball winners

The sixth edition of the Kelley Blue Book Brand Image Awards have crowned a wide range of winners - in a couple of cases the recipient of the laurels might say more about KBB users than they do about the actual winner. Compiled from the responses of more than 12,000 shoppers on KBB.com over the past year, there are 13 categories broken into non-luxury, luxury and truck segments "representing the combined wisdom of the American car-buying public."
The award categories have been revamped this year, with some dropping off, some new ones appearing and at least one other given a new term. What isn't surprising is that Honda won Most Trusted Brand for the second year running, Best Value Brand for the third year in a row and took Best Overall Brand, which wasn't on last year's list of awards.
On our own shores, in the non-luxury categories Chrysler got Most Refined Brand and Buick took Best Value Luxury Brand. Neither one of those marques won anything in last year's Brand Image Awards, while Cadillac, which won Best Interior Design Brand and Best Comfort Brand last year - those awards disappeared this year - went home without a single accolade.