1969 Chevrolet El Camino on 2040-cars

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GM patent reveals new two-stage turbocharger

Modern turbochargers may be some of the best ever made, but performance is something that engineers are always trying to improve. According to GM Inside News, General Motors (GM) is hoping to alleviate some of the negative aspects of a two-stage turbocharger setup with a newly-patented design. The patent, that was filed on May 19, 2016, reveals a clever bypass system that allows the engine, a four-cylinder unit, to optimize both the low-pressure and high-pressure inlets for its respective functions. According to the filing, a conventional two-stage turbocharger setup is engineered to allow both turbines to operate simultaneously at low and mid engine speeds. At high engine speeds, only the low-pressure turbine works. The setup can't isolate either the low or high pressure side, which can impair low-end performance. GM's new two-stage turbocharger setup looks to eliminate this by linking the high-pressure turbo to the exhaust manifold through the high-pressure inlet duct. The low-pressure turbo is attached to the high-pressure turbo by a low-pressure inlet duct, which is linked to a connecting channel. A single actuator that is housed in the exhaust manifold creates a bypass that can opens the high-pressure inlet or close the connecting channel. Depending on what the engine load and speed is, the ECU guides the actuator—a single rotating spindle with discs corresponding to flanges on the high and low pressure sides—to isolate one of the two turbos. Isolating the turbos allow the respective inlets to be engineered for the best possible fluid dynamic performance. The setup should increase performance and decrease lag. There's no word on what car this setup will make an appearance on, but it will most likely be used in premium vehicles before trickling down to the rest of GM's vehicles. Related Video: News Source: GM Inside News, AutoGuide via GM Authority Cadillac Chevrolet GM Technology Sedan turbo patent engine turbocharging

Meet the mother-daughter team that's worked on almost every Chevy Volt

It's Mother's Day, and we're soft enough we love our mothers enough to share a new video from General Motors with you. In it, we meet Monique Watson (left) and Evetta Osbourne, a mother-daughter team that works at the Detroit-Hamtramck Assembly where GM makes the Chevy Volt (along with all of GM's other plug-in hybrids: the Opel Ampera, Holden Volt and Cadillac ELR). The two work side-by-side and have installed the lithium-ion battery pack on almost all of those vehicles - nearly 80,000 of them - since GM started making the pre-production Volts in 2009. In a prepared statement, Watson said that she likes working next to her mom, day in and day out, and they the two are totally in sync when it comes to putting the 400-pound, 16.5-kWh packs into the vehicle undersides. They two can also share stories throughout the day, and Watson said, "The arrangement has absolutely improved our relationship." Osborne started working at Detroit-Hamtramck in 1999, Watson since 2006. If you're driving a Volt today, you probably have them to thank for doing a bit of the work putting your car together. See a short video of them in action below. It's Always Mother's Day for Detroit-Hamtramck Duo Mother, daughter install lithium-ion battery pack in nearly all GM electric vehicles 2014-05-08 DETROIT – For Detroit resident Evetta Osborne, every day is Mother's Day. That's because she literally works side by side with her daughter, Monique Watson, at General Motors' Detroit-Hamtramck assembly plant. They have installed the lithium-ion battery pack on nearly every Chevrolet Volt, Opel Ampera, Holden Volt, and Cadillac ELR since production began. In fact, apart from vacation days and an occasional sick day, the mother-daughter duo has installed almost every battery pack since the Volt was in pre-production in 2009. The ELR launched earlier this year. All told – including Ampera – that's more than 80,000 electric vehicles. "We're a good team and our relationship is secondary when it comes to performing our jobs – but it's great to work alongside my daughter, said Osborne, a mother of five. Because the battery packs weigh more than 400 pounds each, automatic guided vehicles – robotic carts that use sensors to follow a path through the plant – deliver them just as the vehicle body structures glide into position overhead. The carts then lift the T-shaped packs, and Osborne and Watson guide them into the chassis and secure each one with 24 fasteners.

Camaro spy shots show subtly different grille, front fascia

It looks like there some changes in store for the Chevrolet Camaro - the only thing is that we just don't know what Chevy has up its sleeve. Looking at these spy shots, we'd initially be inclined to think that there is just a minor facelift or a new special edition, but upon closer inspection, there are a few oddities about this car that definitely have us intrigued.
The most obvious difference on this prototype is the slightly restyled front fascia with a smaller lower air inlet and the two-bar grille. Then we get to some of the car's mysterious details. For starters, this fascia has the SS vent above the grille, but it looks to be blocked off. Granted this could just be a one-off piece used for testing. What really piqued our interest was at the rear of the car where it has quad exhaust outlets that are used on the ZL1. Could this be the LS7-powered Camaro that we reported on back in December?
At this point, your guess is as good as ours as to what we're looking at here, so let us know in the comments what you think this could be.