Systems and methods for make-up air blocking valve with a restrictive poppet orifice
US11714019B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2022 |
| Grant date | Aug 1, 2023 |
| Priority date | — |
| Expiry date | Jul 26, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01M2250/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Valves, internal combustion engines including such valves, and methods of on-board diagnostic leak detection for a crankcase ventilation system using such valves are disclosed. Each valve has a housing defining a first port and a second port in fluid communication with one another and defining a valve seat therebetween. A biasing member biases a poppet sealing member into a normally open position (defining unrestricted flow through the valve) and a commanded actuator is connected to the poppet sealing member. The poppet sealing member has an orifice therethrough defining a restricted flow path, and, upon command, the commanded actuator moves the poppet sealing member from the open position to a restricted flow position in which the poppet sealing member is seated against the valve seat for restricted flow thorough the orifice in the poppet sealing member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.