2007 Custom Honda Civic Si on 2040-cars

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Honda reveals new Civic hatch for WTCC

If you thought the Honda Civic Type R prototype we drove in Japan looked cool, and that the Civic Tourer that Honda will race in the British Touring Car Championship next year looks even cooler, just take a look at this.
Possibly the ultimate race-spec Civic, this is the car Honda will field next year in the World Touring Car Championship. Like the Type R prototype (but unlike the BTCC-spec wagon) the WTCC challenger takes the form of Honda's latest Euro-spec Civic five-door hatchback.
It's the car with which Honda intends to defend its title and capture the driver's title in next year's championship. It'll face a tough challenge from the new Citroën team headlined by Sebastien Loeb in the new C-Elysee, not to mention the rest of the grid. Fortunately, Honda is entering a whole mess of these Civics in the series, with former champion Gabriele Tarquini and former F1 driver Tiago Monteiro driving the works entries (hence the mixed "Gabriago" tag on the window) and another pair to be entered by privateer teams.

2017 Honda Civic Type R mule sports sweet exhaust

The 2016 Honda Civic might be one the most-spied cars in recent memory, but the wait to actually see the new model is just a few days away on Sept. 16. That big reveal is only for the sedan, but these fresh shots show a sporty variant of the five-door that our spies speculate could preview bits of the next-gen Civic Type R. These photos seem to show the same variant recently spotted in Spain, but there are some notable differences and better angles here. Up front, the styling still shows the same Acura-like design as the patent drawings, but these images make it much easier to spot the narrow mesh in the grilles of the lower air dam. The major change along the side is the new set of big, black wheels with low-profile tires, and this setup fits the style much better than the earlier car. Plus, you can easily spot larger front brake discs and a Brembo logo on the caliper this time. Thankfully, these photos provide a much better look at the earlier example's weird, center-mounted exhaust layout, too. It appears that the larger pipes on the outside each have their own muffler, but there doesn't appear to be one for the smaller outlet in the middle. There's still the possibility this could be a way of testing the single-exit design from the 2016 Civic concept. We know the next-gen Civic will be offered as a sedan, coupe, and five-door. Plus, Si and Type R trims will eventually join the lineup. At the current rate of spy shots, we'll see them all well before their respective reveals. Related Video:

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