NOx sensor protection system

A NOx sensor protection system (130) includes a flow control device (131) forming an internal chamber (134) with exhaust and shield gas ports (141, 150) and a NOx sensor (118, 120). The flow control device (131) is configured to selectively allow a flow of exhaust from an exhaust pipe (112) to the N...

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Bibliographic Details
Main Authors Wengang Chen, Mohamed Daoud, Min Xiao, Qiang Zhu, Andrew M Denis, Zhenhua Zhang
Format Patent
LanguageEnglish
Published 03.08.2022
Subjects
BLASTING
ENGINE PLANTS IN GENERAL
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MEASURING
MECHANICAL ENGINEERING
PHYSICS
STEAM ENGINES
TESTING
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES
TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
WEAPONS
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Summary:A NOx sensor protection system (130) includes a flow control device (131) forming an internal chamber (134) with exhaust and shield gas ports (141, 150) and a NOx sensor (118, 120). The flow control device (131) is configured to selectively allow a flow of exhaust from an exhaust pipe (112) to the NOx sensor (118, 120) when an internal combustion engine (102) is operated with a first fuel, and to selectively direct shield gas from the shield gas port (150) at an angle of 135° to 180° to the NOx sensor (118, 120) to inhibit the flow of exhaust from the exhaust pipe (112) to the NOx sensor (118, 120) when the engine (102) is operated with a second fuel.
Bibliography:Application Number: GB202201654