Good Businessweek piece on the German car industry and the move to electric: massive changes in the supply chain, and far fewer parts. Going to electric isn’t about replacing the fuel tank with a battery – it’s more like ripping the spine out of the car. Link
Honda once used staff technicians to design new technologies ranging from engines to the shape of the suspension arms. Today, Honda believes rapid shifts in technology mean it can no longer afford to keep pace working solely on its own.
That is raising hackles among some within the company who complain about “PowerPoint engineering”—where engineers assemble slides showing how they will patch together others’ technology rather than build it themselves.
.. Car makers around the world are under stress from the huge investments needed to develop new technologies used in electric vehiclesand autonomous driving. To trim costs, most are leaning on megasuppliers such as Bosch, Continental AG and Denso Corp. , as well as smaller companies with cutting-edge technology such as IntelCorp. subsidiary Mobileye.
.. Honda, which prides itself above all on its engines, is farming out the development of an electric motor. Hitachi Ltd.’s auto-parts division has the majority stake in a joint venture with Honda that will make electric motors for Honda cars by March 2021. By 2030, two-thirds of its cars will be partially or fully electric
.. Honda also said it would buy electric-car batteries from General Motors Co.
Tesla says the car will come with a 200-kilowatt-hour battery, giving it a range of 620 miles at highway speeds without the need to recharge. In comparison, the current 75-kilowatt-hour battery in the Model S gives the sedan a 250-mile range.
.. Musk said the car will not be available until 2020.
“What is often forgotten is the current drive to EVs was initiated by Nissan, Mitsubishi [the i-MiEV] and Tesla,” said Aston Martin CEO Andy Palmer, who championed the Leaf program when he was a vice president of Nissan. “Without all three and VW’s Dieselgate, we would not be seeing this revolution.”
But having been more or less obliged to build such cars, auto makers still face the challenge of making them desirable and status-bearing. It’s comforting somehow that this part of the auto industry, at least, has not changed: You have to sell the sizzle with the steak.
.. With its 800-volt charging technology, the Mission E is targeting more than 300 miles of range and a 15-minute quick-charge good for 250 miles. Also: 600 hp, all-wheel drive, and 0-60 mph in 3.5 seconds, if that does anything for you.
.. If you are wondering how eco-weenie mobiles got so mega, the simple answer is bigger, badder batteries and the systems that manage, support and cool them. The average specific-energy and power density of lithium-ion batteries has been rising steadily for the past decade. As they do, they allow more energy to be put in the bottle (to go farther) and widen the bottle’s mouth so more energy comes out at once (to go faster).
.. By virtue of a comparatively lower center of gravity, EVs tend to corner flatter and harder without body roll. EVs also put torque to the ground more efficiently. Unlike conventional traction-control systems, an e-motor’s twist can be modulated hundreds of times a second, exploiting all available adhesion between tire and surface without spinning.
.. For driving enthusiasts there is also a little game-changer ahead called independent torque vectoring. By virtue of their compactness, EV motors can be arrayed at all four wheels, allowing each to work independently and cooperatively, speeding up or slowing down to help the car in extreme maneuvering. As the driver heads for a corner, the inside front wheel slows, or even drags, the outside tire pushes harder, the rear wheels do the same, and the directional power actually bends the car’s path through the turn.
.. “I would contest that with or without legislation, we would be investing in EVs,” said Mr. Palmer of Aston Martin. The design opportunity “has got both our engineers and designers excited.”
.. But is faster always better? “The power of an EV powertrain is not in question,” said Mr. Palmer. “The biggest step change is how it feels for the driver (and passengers) versus an internal combustion engine. Although we as a brand are loved for the sound of our engines, we don’t see any issue with the sound of silence.”
.. 2018 Audi e-tron Quattro, a mid-size SUV with a 95-kWh battery, nominal range of 310 miles, and 0-60 mph in 4.6 seconds. Porsche has indicated it too will offer an EV crossover, Macan-sized, on the VW Group’s new dedicated architecture.