SYSTEMS AND METHODS FOR VIRTUALLY DETERMINING FUEL SULFUR CONCENTRATION

• Main Authors: SU CHANGSHENG, XI YUANZHOU, SHARMA GAUTAM, GONG JINQIAN, PATHAK DURVESH RAMESH
• Format: Patent
• Language: Chinese; English
• Published: 23.07.2021
• 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; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

A control module for an aftertreatment system that includes a selective catalytic reduction (SCR) catalyst and an oxidation catalyst, comprises a controller configured to be operatively coupled to the aftertreatment system. The controller is configured to determine an actual SCR catalytic conversion efficiency of the SCR catalyst. The controller determines an estimated SCR catalytic conversion efficiency based on a test sulfur concentration selected by the controller. In response to the estimated SCR catalytic conversion efficiency being within a predefined range, the controller sets the test sulfur concentration as a determined sulfur concentration in a fuel provided to the engine. The controller generates a sulfur concentration signal indicating the determined sulfur. 一种用于后处理系统的控制模块，后处理系统包括选择性催化还原(SCR)催化剂和氧化催化剂，控制模块包括被配置成可操作地耦合到后处理系统的控制器。控制器被配置成确定SCR催化剂的实际SCR催化转化效率。控制器基于由控制器选择的测试硫浓度来确定估计的SCR催化转化效率。响应于估计的SCR催化转化效率在预定义的范围内，控制器将测试硫浓度设置为提供给发动机的燃料中的确定的硫浓度。控制器生成指示所确定的硫的硫浓度信号。