Intake bypass flow management systems and methods

US11338229B2 · kind B2 · utility

Assignee

• Cummins Filtration IP, Inc. · US

Inventors

• Yashpal Subedi · Madison, US
• Dane P. Miller · Monona, US
• Barry M. Verdegan · Stoughton, US
• Shantanu Nadgir · Columbus, US
• W. Beale Delano · Columbus, US
• Andry Lesmana · Columbus, US
• Jitesh Panicker · Columbus, US
• Jeffrey L. Oakes · Columbus, US

Key dates

• Filing date: Feb 28, 2020
• Grant date: May 24, 2022
• Expiry date: Feb 28, 2040

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2279/60
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Filtration systems having a normal filtration mode and an enhanced filtration mode are described. In some arrangements, the filtration system is an air filtration system having a primary air filter element, a pre-cleaner, and a pre-cleaner bypass valve. Based on feedback from an intake air quality sensor the bypass valve is either opened or closed to selectively route intake air through the pre-cleaner during sensed dirty air operating conditions (e.g., heavy dust or moisture concentrations). In other arrangements, the filtration system is a liquid filtration system (e.g., a fuel or oil filtration system) that has a main filter and a secondary filter. The filtration system selectively routes the liquid being filtered through the main filter, the secondary filter, or a combination thereof depending on a detected event or sensed characteristic of the liquid.