А знаеш ли какво е помпа-дюза ?
Аве уж жените са по-старателни и поназнайват по някой език
common rail = обща рейка . Ето от този линк може да го видиш нарисувано :
http://www.google.bg/search?q=common+ra ... 80&bih=861
Ето ти на помпа-дюза:
Ето някой интересни факти :
Diesel engines were first developed by Rudolph Diesel around 1893. While there were refinements in the design, the next major advance in diesel engine technology was the common rail direct fuel injection system. The common rail system prototype was developed in the late 1960s by Robert Huber of Switzerland, Dr. Ganser at the Swiss Federal Institute of Technology in Zurich and Dr. Shohei Itoh and Masahiko Miyaki, of the Denso Corporation, a Japanese automotive parts manufacturer. Firstly used for large enginces for trains and ships, The Denso Corporation were the first to develop a Common Rail Fuel System for trucks, first using it on the Hino Rising Ranger truck sold in 1995.
Development on the smaller engines required for cars took a little longer, and the invention of modern electronic engine control units (ECU) allowed each injector to be controlled electronically rather than mechanically. This was extensively prototyped in the 1990s, with collaboration between Magneti Marelli, Centro Ricerche Fiat and Elasis. After research and development by the Fiat Group, the design was acquired by the German company Bosch for completion of development and making suitable for mass-production.
The first passenger cars to use the common rail system were the 1997 Alfa Romeo 156 1.9 JTD and the 1997 Mercedes-Benz E 320 CDI.
The most significant change since 1997 has been the move away from simple electrical solenoid motors to control the valves to more accurate piezoelectric control (similar to those used in ink jet printers). to give even finer levels of control.
Pumpe düse (PD) is a quite rare beast, because in the world of diesel cars, it's only the Volkswagen Group that uses this technology for cars. The name Pumpe Düse is German for Pump Metering. This refers to the PD unit being an all-in-one assembly comprising the high pressure pump (that pressurises fuel to injection pressure) and the injector (which injects the pressurised fuel into the engine cylinder).
There is one complete pump düse assembly (otherwise known as a unit injector) on the cylinder head for each cylinder, and the pump part of the PD is driven by a camshaft in the cylinder head (usually the same camshaft that operates the engine's own cylinder valves), or by a hydraulic oil pressure system.
