The proper functioning of a catalytic converter requires precise regulation of A/F to the stoichiometric value. The control of A/F is usually based on regulating the fuel ow in proportion to air ow changes imposed by the driver. However, due to the relatively long time delays in the fuel feedback loop, the controller cannot properly compensate for rapid air ow changes. To overcome this de cienc...

Though building an AMESim physical model of vehicle three-way catalytic converter (TWC), this article aims to study the light-off characteristics of TWC. By solving the energy and mass conservation equations of gas-solid two phase of the model, this article obtains the emissions conversion rate, such as CO, unburned hydrocarbons (CaHb) and nitrogen oxides (NOx) under different parameters. The r...

This paper presents a 4th order CLCL resonant converter which is suitable for constant current power supply applications. This converter is designed with Immittance characteristic with two inductors and two capacitors in resonant network. A detailed analysis and design process of a 200w converter as a constant current supply have been provided and simulation results are verified with results of...

Based on the research and comparison of main contents measurement methods for inspection Maintenance Program in United States, European Union, China, analysis OBD it is found that in-use vehicle method our country has covered mainstream methods, however, overall system design still lacks corresponding standards technical support maintenance closed-loop supervision, cause failure concentrated ma...