Patents by Inventor Peter E Nowak

Peter E Nowak has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Engine variable valve lift system having integrated hydraulic fluid retention
    Patent number: 9631526
    Abstract: An electro-hydraulic variable valve lift system includes a medium pressure chamber, a high pressure circuit, a valve, a pump and an actuator. The chamber is formed in a cylinder head assembly and is in fluid communication with a hydraulic fluid source. The high pressure circuit is positioned in the cylinder head assembly and is in selective fluid communication with the chamber. The valve is in fluid communication with the chamber and the high pressure circuit, and the pump is configured to pump hydraulic fluid in the high pressure circuit. The actuator is in fluid communication with the pump, control valve and high pressure circuit, and is in engagement with an intake valve. The chamber and the actuator are each positioned in the cylinder head assembly at a location above the valve such that during an engine shutdown event, hydraulic fluid is retained in the chamber and the valve.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: April 25, 2017
    Assignee: FCA US LLC
    Inventor: Peter E Nowak
  • ENGINE VARIABLE VALVE LIFT SYSTEM HAVING INTEGRATED HYDRAULIC FLUID RETENTION
    Publication number: 20160076412
    Abstract: An electro-hydraulic variable valve lift system includes a medium pressure chamber, a high pressure circuit, a valve, a pump and an actuator. The chamber is formed in a cylinder head assembly and is in fluid communication with a hydraulic fluid source. The high pressure circuit is positioned in the cylinder head assembly and is in selective fluid communication with the chamber. The valve is in fluid communication with the chamber and the high pressure circuit, and the pump is configured to pump hydraulic fluid in the high pressure circuit. The actuator is in fluid communication with the pump, control valve and high pressure circuit, and is in engagement with an intake valve. The chamber and the actuator are each positioned in the cylinder head assembly at a location above the valve such that during an engine shutdown event, hydraulic fluid is retained in the chamber and the valve.
    Type: Application
    Filed: September 9, 2015
    Publication date: March 17, 2016
    Inventor: Peter E Nowak