Invention Grant
- Patent Title: Robust low pressure exhaust gas recirculation system control for a turbocharged gasoline engine
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Application No.: US15800395Application Date: 2017-11-01
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Publication No.: US10344691B2Publication Date: 2019-07-09
- Inventor: Shu Wang , William P Attard , David Lawrence , Ethan E Bayer , Tyler Tutton
- Applicant: Shu Wang , William P Attard , David Lawrence , Ethan E Bayer , Tyler Tutton
- Applicant Address: US MI Auburn Hills
- Assignee: FCA US LLC
- Current Assignee: FCA US LLC
- Current Assignee Address: US MI Auburn Hills
- Agent Ralph E. Smith
- Main IPC: F02M26/28
- IPC: F02M26/28 ; F02D41/00 ; F02M26/47 ; F02M26/02 ; F02M26/00

Abstract:
Systems and methods for a turbocharged gasoline engine utilize a controller configured to receive a set of parameters including a measured pressure delta across an exhaust gas recirculation (EGR) valve disposed in a low pressure EGR (LPEGR) system of the engine and a measured pressure at an outlet of a differential pressure (dP) valve disposed in and distinct from a throttle valve of an induction system of the engine. The controller is further configured to determine a set of modeled pressures based on the set of parameters, a target EGR valve mass flow, a target EGR valve delta pressure, a current dP valve mass flow, and a pressure at an outlet of the air filter, determine target positions for the EGR valve and the dP valve based on the set of modeled pressures, and control the EGR valve and the dP valve based on their respective target positions.
Public/Granted literature
- US20190128196A1 ROBUST LOW PRESSURE EXHAUST GAS RECIRCULATION SYSTEM CONTROL FOR A TRBOCHARGED GASOLINE ENGINE Public/Granted day:2019-05-02
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