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Volvo XC90 Coasting Transmission Deep Dive | How, when and why of coasting

In our recent 2021 Volvo XC90 Recharge review, its turbocharged-supercharged-hybridized powertrain delivered impressive horsepower and fuel economy. But Volvo has one additional trick up its sleeve, propelling a car with power that's simpler, cheaper and all-natural: It's the power of momentum and gravity. I've always been halfway to a hypermiler. I'm not obsessive about it, but in city driving, I enjoy timing stoplight approaches to keep the wheels rolling and avoid the inertia of restarting from a stop. There's little point to needlessly racing and braking between red lights, wasting kinetic energy (and therefore fuel). So I tend to drive strategically instead, often catching up with the drivers who jackrabbit but get hung up at the lights. And, back when I owned a long line of vehicles with manual transmissions, I coasted. Coasting used to be slightly controversial. Some claimed it doesn't actually save gas, though my mileage calculations showed otherwise. Another school of thought insisted that removing engine braking from the equation, even momentarily, constitutes a dangerous loss of control. Of course, an experienced driver can slip a manual transmission back into gear in a flash when engine braking's actually needed. And one should always use some common sense and judgment about when and where to coast. I'm not talking about careening down a 15% grade into a school zone.  Anyway, those arguments became moot when automatic transmissions pretty much took over. (And no, never coast with a typical automatic transmission. Even if it weren't damaging to your type of automatic — but assume that it is — the risk of screwing up a nudge of the shifter from drive into neutral is too great.) XC90 Recharge 8 View 18 Photos But happily, some automakers in recent years have added a coasting feature to their automatics, with the aim of eking out more fuel efficiency. Volvo calls the feature on its Aisin eight-speed "Eco Coast." Some Mercedes, BMWs and others call it "sailing" or "gliding." The Hyundai Ioniq, Ford Mustang Mach-E and Polestar 2 are among EVs that allow you to cancel out all regeneration and freewheel downhill. And future cars such as the BMW iX are also being designed to do it. By building coasting into the clockworks, automakers have taken any traffic safety concerns out of the question, because the car will instantly switch you back into gear when needed.

Volvo promises new direct-injected diesels, 8-speed auto

As a part of eliminating its dependence on Ford platforms and powertrains, Volvo has previously announced information about its Volvo Engine Architecture (VEA) and Scalable Platform Architecture (SPA), but now we're finally getting some details about what will power some of the Swedish automaker's next-generation products.
The biggest key to VEA on the diesel engines is a new technology Volvo calls i-ART. This system uses unique injectors at each cylinder capable of monitoring fuel pressure and adjusting accordingly to maximize fuel economy and performance and reduce emissions. Looking ahead, Volvo says its four-cylinder engines will be able to offer the power of a six-cylinder and eventually, mixed with some sort of electrification, will be able to rival the performance of a V8 and "turn V8s into dinosaurs."
More details about the new diesel injection technology is posted in the press release below.

How Volvo is going greener, according to sustainability chief Henrik Green

STOCKHOLM — This week, Volvo unveiled its new flagship electric vehicle, the EX90 three-row SUV. ItÂ’s not just a look at a product weÂ’ll see come to market in 2024, but a glimpse at the approach Volvo is taking to become more sustainable as it aims to go all-electric by 2030 and carbon-neutral by 2040. After the unveiling of the EX90, we had the opportunity to speak with Henrik Green, VolvoÂ’s advanced technology and sustainability officer, as part of a roundtable discussion about the brandÂ’s climate strategy moving forward. Part of the strategy is accountability and transparency. In an industry where sensitive materials like cobalt and lithium can be environmentally, socially and geopolitically problematic, traceability is paramount. Volvo will use blockchain technology — the same sort of secure ledger tech that makes cryptocurrency possible — to trace cobalt, lithium and nickel from their very origins in the earth all the way to the EX90s that roll off the factory floor. Green said he expects that traceability to expand to more materials, but those three are what Volvo can commit to today. Green also predicts a time when “you as a consumer should be able to see, ‘Here, in my app, this is the car I bought, this is where my nickel came from thatÂ’s in my car.’” While step one is improving transparency, “the next step is — this is much more long-term — how can we affect the industry to source from the most sustainable sources as possible?” And that leads us to recycling. A circular economy is the goal, where raw materials are used minimally, replaced by materials sourced from old cars, batteries, electronics and the like. But that depends on the first generations of electric cars fulfilling their lifecycles before they can be recycled. And obviously the better the longevity of products like batteries, the longer this will take. “Unfortunately, it has this built-in time lag of putting batteries out there that live until they need to be replaced, and then we will get the material back.” Partners are beginning to scout for those recyclable materials from sources like non-automotive electronics, “but the massive volume of car batteries will not be accessible until these cars have been on the road 10, 15 or more years.” But recyclability is one of the main factors Volvo looks for when partnering with companies like Northvolt, with whom Volvo is building a factory and R&D center in Gothenburg, Sweden.