Equipment Type

Precision Flow EGR Cuts NOx, Sips Fuel

Volvo developed Precision Flow exhaust-gas recirculation (EGR) to improve fuel economy by 3 percent even as they met EPA's 2007 emissions standards for on-road diesels. An electronic turbocharger actuator on the D11, D13 and D16 engines accurately controls backpressure, and a near-side EGR valve close to the turbo precisely regulates flow as the driver modulates his foot on the accelerator.

December 01, 2006

Volvo engine with Precision Flow EGR technologyVolvo developed Precision Flow exhaust-gas recirculation (EGR) to improve fuel economy by 3 percent even as they met EPA's 2007 emissions standards for on-road diesel engines. An electronic turbocharger actuator on the D11, D13 and D16 engines accurately controls backpressure, and a near-side EGR valve close to the turbo precisely regulates flow as the driver modulates his foot on the accelerator. Volvo confirms flow with a downstream pressure sensor. The net result? "We get exactly the amount of cooled EGR we need — no more, no less — which improved fuel economy while meeting emissions," according to Volvo.

recent articles on Diesel Engines, Over 250 hp

More like this

Add comment

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.
Image CAPTCHA
Enter the characters shown in the image.
Overlay Init