The gear manufacturing industry in particular might look like it has a lot to fear from this ongoing market shift. After all, transmissions are the main component the automotive industry uses gears in, and electrified and even hybrid cars need fewer of them. But even fully electrified cars will require some form of gearing, even if they don’t necessarily require as many gears per transmission system. The future isn’t set in stone, but there are very few nightmare scenarios that see the gear industry become divorced wholesale from automotives. Even in the event that we one day see a 100 percent saturation of electric vehicles in the market, gears will still be relevant, if perhaps having a diminished role. Gear manufacturers don’t have to worry about complete obsolescence, but there is concern about the industry shrinking.
But for every expert you find that’s warning of a potential industry crunch, another will point out that even if the number of gears required per transmission goes down, a rise in overall demand over time would counteract the trend and theoretically keep the industry level.
There’s obviously no one who can perfectly predict how the industry will shake out, but even if that industry shrinks, there will still be room for some players. The question you need to answer is which market do you want to try and be a player in: electrified, ICE or both?
If you want to be able to compete in the electrified market, then it’s time to buckle down and start looking at how you’re going to accomplish that. If you want to keep providing to the internal combustion engine market, you need to look at how you’re going to survive a hypothetical industry crunch.
On the adaptation front, there are a few trends in what manufacturers are doing right now as they shift to developing electrified drive trains. For one, they’re starting to take components that have typically been their own individual systems in a drivetrain and merging them into a single component. Putting a gearbox and a motor controller into the same casing, for example.
“More and more of those systems are becoming one or within one casing,” Shepherd said. “So the engineering is being brought together to condense those components into one complete product.”
ECM's Nano line is the company's leading gas quench furnace which can help you acquire the quality required to make gears that will succeed in an electrified automobile.
If you’re looking to stick to your guns, however, Beauchesne believes that the best path to survival in the ICE market is to focus on quality.
“The numbers will be smaller, but the quality will be necessary to be higher, so the manufacturers that are able to produce quality gears will be still able to survive; it’s just a matter of volume,” Beauchesne said.
The exact timeline of when we’re going to get there, however, is a bit less clear. As Brentnall noted earlier, we’ll probably start seeing a lot of companies’ current inaugural projects start hitting the market in two to four years, but that doesn’t mean electrification is going to be reaching ubiquity in that time, and nobody’s got a crystal ball to predict exactly when and how quickly that shift is going to happen. Most outlooks, however, predict that the slow march of progress will be picking up speed in about 10–15 years.
How to Get There
It might sound overly optimistic to start worrying about what’s going to happen in 2030 when there are bills to be paid today, but if/when the electric car singularity does eventually come, it’ll already be too late to jump onboard, because you’re going to have to do some homework before you can get your own slice of the market.
In order to compete in this arena, a lot of manufacturers are realizing that what they’re doing today isn’t going to cut it. They’re going to have to nurture entirely new competencies in their organizations, either through hiring or education, to provide an appealing product in this new market.
“[Manufacturers are] having to reskill and not just learn skills that are part of other industries, but work out how they apply to vehicles and passenger cars, developing new ways of doing things,” Shepherd said. “And new standards, new norms are still being established.”
So what do you need to learn?
Efficiency is a key concern, and you’ll have to know how to keep both electromagnetic and mechanical losses low. A firm knowledge of the finer points of electromagnetics in general is necessary, and being able to predict excitation forces is important.
Most important to have, however, is an understanding of how to integrate all the individual components and, more importantly, the varying disciplines required to make them, together. Knowledge of how the entire assembly goes together is paramount, and that includes learning how a battery figures into the assembly along with any effects that might have on the drivetrain as a whole. But just as important is understanding how and why each discipline, from gear manufacturing to battery design, works the way it does.
Even beyond individual competencies, you’re going to have to wrap your head around an entirely new system of development. That means learning new testing cycles. Adapting to different safety legislations and standards that are still developing and may change in the future. Even figuring out a new development program. One of the largest challenges Shepherd and Brentnall cited was that while ICE development has a generally understood and well-practiced development cycle, best practices for electric drivetrains are still being established.
“It’s rare for an OEM to develop a brand new vehicle with a brand new internal combustion engine and a brand new transmission simultaneously,” Brentnall said. “There’s just too much risk in that program to hit a launch date. So typically, you pick one and you develop that new element and then introduce it into an existing vehicle, perhaps with an existing engine, and then marry it to a brand new transmission. That’s pretty palatable.”
Getting into electrical drivetrains, however, requires an OEM to develop all of that simultaneously — the engine, the mechanical drive, the battery, the oil system — they all have to come together into a cohesive whole. And manufacturers and suppliers need to at least understand enough about that whole to figure out how to get their products to fit inside it.
For gears specifically, the main focus is on making the gearing quieter. Without the hum of a combustion engine, the gears become the noisiest part of a car, and thus finding ways to make a gear run more quietly is a top priority. That means reducing distortion as much as possible, which according to Beauchesne, in turn means higher quality machining and different, better materials that are higher in hardenability and easier to quench. In short, to keep on the way that gears have already been going. This is particularly helpful for ECM, Beauchesne’s company, which specializes in top-of-the-line gear quenching. Often, in order for a gear to reach the level of quality needed to reduce noise, such materials are a must for the quenching process to be effective.
This isn’t a comprehensive list of all the things you’ll need to learn or challenges you might face if you’re thinking about designing for electrified cars, but it’s a good one for establishing the scope of the project you might potentially embark on and the kind of pitfalls to consider.
And it’s certainly worth putting some thought into over the next few months. Electrified cars might not be on the road yet, but the shift is already happening where it matters to us: the factories. And it’s gaining momentum. For those still on the sidelines, it’s time to start figuring out what to do about it. It doesn’t matter if you go all in on electrification or keep providing for internal combustion engines. What matters is that you have a gameplan on how you’re going to do it. 
Drive System Design Inc.
Phone: (248) 893-6210
www.drivesystemdesign.com/us
ECM USA
Phone: (262) 605-4810
www.ecm-usa.com