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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

Recharge Wrap-up: Tesla P85D upgrades coming soon, lease a Chevy Volt for $149 a month

CarCharging has raised $6 million from shareholders and has restructured to save cash. The EV charging company plans to expand further in 2015 - with an eye toward achieving profitability - in part by investing in technology and "unlocking the value of our significant equipment inventory," says CarCharging CEO Michael D. Farkas. The group expects to reduce administrative costs by 40 percent, and has hired an interim Chief Financial Officer to help carry out its plans for growth. CarCharging raised the cash through offering convertible preferred stock to its shareholders, whom Farkas thanked "for their passion and patience." Read more in the press release below. Rydell Chevrolet in Los Angeles is offering Chevrolet Volt leases for $149 per month. In a video ad, Rydell offers the Volt for $169 a month with $3,390 due at signing, but another ad shows the offer at $149 a month with $3,550 down or $248 per month with $0 down. Rydell Chevrolet will ship the car anywhere in the lower 48 states. It also appears they offer cupcakes. See Rydell's video below, or read more at Inside EVs. Tesla will upgrade the Model S P85D with higher performance and top speed. The free update, which is due "in the next few months" according to a statement from Tesla, will raise the electronically limited top speed from 130 to 155 miles per hour. "Additionally, an over-the-air firmware upgrade to the power electronics will improve P85D performance at high speed above what anyone outside Tesla has experienced to date," Tesla says. The update will be available for the lifetime of the car, which includes subsequent owners. Read more at Green Car Reports. Car Charging Group Completes $6 Million Capital Raise Concurrently Enacts Restructuring Actions to Reduce Cash Burn MIAMI BEACH, Fla., Dec. 29, 2014 /PRNewswire/ -- Car Charging Group, Inc. (OTCQB: CCGI) ("CarCharging" or the "Company"), the largest owner, operator, and provider of electric vehicle (EV) charging services, today announced that it has closed an offering (the "Offering") and raised net proceeds of up to $6 million with current institutional shareholders. The Offering consisted of convertible preferred securities with a conversion price of $0.70 and warrants exercisable at $1.00. Proceeds will be used to: - Strengthen CarCharging's balance sheet; - Build on the past year's progress; and - Provide growth capital for expanding the Company's network.

Supercharged 2015 Chevy Corvette Z06 takes the C7 beyond the ZR1

The Z06 is just about everything we got in the last ZR1, but better.
After a bright-yellow false start, here is the real thing: the fourth-generation, 2015 Corvette Z06. If Chevrolet makes a ZR1 version of the C7 Corvette, it's going to be absolutely mega, because the Z06 is just about everything we got in the last ZR1, but better.