Eaton Introduces New Supercharger
There are improvements.
Then there are improvements.
The TVS2 supercharger just launched by Eaton Corporation (eaton.com) is in the latter category.
Consider: the new supercharger—thanks to rotary profile changes that reduce the clearance between rotors to minimize internal leakage, rotor twist modifications that shift peak efficiency for overall fuel economy improvement, and new porting features that eliminate unnecessary air compression—provides a 10 to 16% improvement in isentropic efficiency in targeted operating zones compared to Eaton’s own TVS R410 product.
Says Brian Contat, product director, Boosting, Eaton Vehicle Group, “The latest innovation within our boosting portfolio”—the TVS2—“delivers on the key areas that our customers have the most interest in, including efficiency, weight reduction, improved engine performance, and the ability to better package supercharger devices within existing and future architectures.”
The new supercharger’s low-speed airflow has been improved by more than 30%, which contributes to increased torque at low engine speed. The unit is 25% lighter than the previous generation supercharger.
One ideal application for the TVS2 is in combination with a turbocharger, with the supercharger located after the turbo. To handle the high pressure, there are specific seals deployed, and there is a ball bearing system that enables temporary speeds up to 30,000 rpm, or 25% more than Eaton’s current units.
Because the higher speeds and pressures can result in NVH, the TVS2 features a backflow port that reduces noise without affecting airflow or efficiency. There is a micro-perforated panel that results in a decibel level improvement of up to 8 dB at low speeds.
A supercharger/turbo system (a compound system) used in a 2.0-liter engine could deliver more than 350 lb-ft of torque and 380 hp, thereby, Eaton engineers suggest, the ability to use even small engines in large vehicles, given the performance provided by the setup.
Making improvements to existing engines, as well as working toward something entirely different.
A young(ish) guy that I’ve known for a number of years, a man who spent the better part of his career writing for auto buff books and who is a car racer on the side, mentioned to me that his wife has a used Lexus ES Hybrid.
Although the term “continuous improvement” is generally associated with another company, Honda is certainly pursuing that approach, as is evidenced by the Accord, which is now in its ninth generation.