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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

Aston Martin Red Bull Racing to switch to Honda engines starting in 2019

After a 12-season partnership with Renault, the Aston Martin Red Bull Racing Formula 1 team is switching engine suppliers. Starting next season, the team will use Honda powertrains, following the move this year of Red Bull's junior team, Toro Rosso. This effectively makes Red Bull Racing the Honda works team, something it's never truly benefited from since joining the sport in 2005 after purchasing the former Jaguar Racing team. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Honda has had a rough time since returning to F1 with McLaren back in 2015. Both sides hoped that the move would rekindle one of the most successful pairings in F1 history. Unfortunately, Honda powertrains were both underpowered and unreliable. The partnership proved to be so toxic that McLaren ended the deal early, moving to Renault power starting this season. On the other hand, Toro Rosso is off to a fine start this year with Honda, surely helping cement Red Bull's decision to drop Renault. Since moving to Renault power in 2007, Red Bull Racing has won 57 races, four drivers' championships and four constructors championships, making it one of the most successful teams in F1 history. The move should be a huge boon for Honda. Red Bull Racing is currently one of the top teams, fighting for both podiums and wins, so the move shows how much faith Red Bull has in the Japanese automaker. When McLaren picked up Honda power, it was a mid-pack team that had just two podiums in the previous two seasons. The Honda partnership is likely to play into Daniel Ricciardo's next move. His current contract with Red Bull racing ends at the end of 2018. He's one of the best and most talented drivers racing today and unlikely to stay with a team that might prevent him from winning races and fighting for championships. Related Video: News Source: Aston Martin Red Bull Racing Motorsports Honda Renault Racing Vehicles F1 Red Bull Racing

Honda CR-V set to grow in its next-generation

It's been accepted that cars grow with each successive generation. Honda looks to be stretching that theory as it conducts testing of the next-generation CR-V. It's big. Judging by these images, Honda has essentially taken a CR-V and inserted a big, long door between the B- and C-pillars, stretching the wheelbase by what has to be several inches at the very least. This makes it a virtual certainty that when the new model debuts, it'll be with both five- and seven-passenger variants. Not only will this give Honda an advantage over basically all of its two-row-only competitors, it'll also create separation between its new entry level CUV, the HR-V. Judging by the camouflage, we're also betting Honda has made some serious changes to the front end while still using the old CR-V's bones. You can see the engineers have jury-rigged some hefty auxiliary lights on the front fenders, since the entire fascia has been covered. And in back, there are (weirdly for a CR-V) two prominent exhausts. Judging by these images, the next CR-V is still pretty early in its development cycle. We wouldn't expect it to debut before early 2017. Related Video: