Diesel oxidation catalyst (DOC) hardware-in-loop simulation system based on analog circuit

• Main Authors: LI HAIXIANG, YIN YUE, DIAO QINGHUA, YUAN XINMEI, SUN KE, XING ZENGZHEN, WANG CHUANG
• Format: Patent
• Language: Chinese; English
• Published: 30.03.2016
• Subjects: BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; ENGINE PLANTS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING; STEAM ENGINES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WEAPONS

The invention discloses a diesel oxidation catalyst (DOC) hardware-in-loop simulation system based on an analog circuit. The DOC hardware-in-loop simulation system based on the analog circuit comprises a power supply unit, a main control unit, a circuit unit and an upper computer. On the basis of the thermoelectric similarity principle, the characteristics of a temperature field in a DOC are mapped into the circuit; the exhaust gas temperature of an engine is collected and converted to a voltage signal; the temperature response characteristics of the different positions in the DOC are simulated through the voltage change characteristics of the analog circuit. A true hardware circuit is adopted, the circuit response characteristics are consistent with those of the DOC, timer and time compensating problems in numerical value solution are not involved, and the real-time response characteristics of the system are directly obtained. The calculating solution is not involved, and the computational resource is not oc