Control de emisiones mediante sistemas de inyección y de admisión

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Presentation transcript:

Control de emisiones mediante sistemas de inyección y de admisión Emisiones Vehiculares 23-Septiembre-2005

Sistemas de Inyección Gasolina Inyección Directa Altas presiones Inyección Indirecta Bajas presiones Continua Intermitente

Sistemas de Inyección Diesel

Sistema de Inyección Main functions of the Diesel Fuel Injection System Injection Timing Control Injection Quantity Control Proper Atomization & Penetration Additional Functions Pilot Injection Rate Shaping Post Injection

Sistema de Inyección Types of Diesel Fuel Injection Systems Pump-Line-Nozzle (P-L-N) Unit Pump (UP) Unit Injector (UI) Common Rail System (CR) HDV & MDV: CR in the near future

Sistemas de Inyección Diesel

Sistema de Inyección Motivation for using electronically-controlled Injection Systems in diesel engines Emissions regulations Improved engine response Improve fuel economy while complying with emission regulations Customized engines for various applications Value added features Lower cost to cumbersome mechanical add-ons Full-authority parameter control and flexible implementation of control strategies Flexible injection timing Flexible injected quantity metering Reduced shot-to-shot variability Reduced cylinder-to-cylinder variability Smoke control strategies

Sistema de Inyección

Sistema de admisión de aire Methods of air charging Supercharging Turbocharging Wave charging Superchargers drives Mechanically driven Electrically driven Hydraulically driven Turbocharger types Fixed geometry Fixed with Waste-gate Variable geometry Fixed With AGR

Superchargers drives Mechanically driven Electrically driven Hydraulically driven

Turbocharger types Fixed geometry Fixed with Waste-gate Variable geometry Fixed With AGR