Diesel common rail injectors are required to utilize a higher injection pressure and to achieve higher injection accuracy in order to meet increasingly severe emissions, less fuel consumption, and higher engine performance demand. In addition to those requirements, in conjunction with optimized nozzle geometry, a more rectangular injection rate and stable multiple injections with shorter intervals are required for further emissions and engine performance improvement by optimizing the combustion efficiency. Following these requirements DENSO has been working on the development of the 4th generation piezo injector (G4P) according to the following concepts.This paper reports the G4P injector concepts, structure and hydraulic performance with rectangular injection rate and shorter multiple injection intervals close to zero, and also reports engine performance improvement result with G4P.
4th Generation Diesel Piezo Injector (Realizing Enhanced High Response Injector)
Sae Technical Papers
SAE 2016 World Congress and Exhibition ; 2016
2016-04-05
Conference paper
English
4th Generation Diesel Piezo Injector (Realizing Enhanced High Response Injector)
British Library Conference Proceedings | 2016
|High-pressure, piezo-actuated diesel fuel injector from FEV
Automotive engineering | 2000
|Technology - High-Pressure, Piezo-Actuated Diesel Fuel Injector From FEV
Online Contents | 2000
The Piezo Unit Injector System for Volkswagen Diesel Engines
British Library Conference Proceedings | 2005
|Complete modelling of a piezo actuator last-generation injector for diesel injection systems
Automotive engineering | 2014
|