Iran Diesel Spare Parts Trading Group - گروه بازرگانی ایران دیزل

20/03/2022

Happy New Year,
Happy Nowruz to all Persian people.

31/12/2018

Hi friends
Happy New year to you and your family
best wishes.

02/12/2017

Step Back , Start again ,
Welcome your inquiry

19/06/2016

17/06/2015

12/10/2014

hi guys,
to receive our offers about fuel injection spare parts , just let us know your email address ,
you can email us on [email protected]
also visit our page

Mahdi Morovati

11/09/2014

http://youtu.be/utnC8vSqqQc

11/07/2013

CONSTRUCTION EQUIPMENT PARTS

http://www.youtube.com/watch?v=r8bvuG901v8

for more info visit us at www.rfedistribution.com for any of your construction equipment needs.

30/06/2013

DENSO CommonRail Diesel System

http://www.youtube.com/watch?v=PkrgGXYcHRs

DENSO Commonrail Diesel System DENSO Interactive Information & Communication

04/05/2013

Demolition in Swizerland

20/04/2013

Komatsu pc 5500:
With an operating weight between 525-540 tons (1,157,000-1,190,000lbs.) and a shovel capacity of 38 yd3 can help mines move more material in less time thereby reducing the cost per ton and increasing profits. Blending innovative technology and engineering, Komatsu's PC5500 stands up to the rugged-use of today's mining applications.

The PC5500 has two powerful Komatsu SDA12V159E-2 diesel engines. Both engines are rated 1260 HP. The super shovel's low engine emission levels meet EPA regulations TIER II and the time saving oil management system is fitted as standard on all machines.



http://www.youtube.com/watch?v=l9cGGxk_vho

Una Gran Maquina capaz de menear cielo y tierra la Komatsu pc 5500.

14/02/2013

An Injection Pump is the device that pumps fuel into the cylinders of a diesel engine. Traditionally, the injection pump is driven indirectly from the crankshaft by gears, chains or a toothed belt (often the timing belt) that also drives the camshaft. It rotates at half crankshaft speed in a conventional four-stroke engine. Its timing is such that the fuel is injected only very slightly before top dead centre of that cylinder's compression stroke. It is also common for the pump belt on gasoline engines to be driven directly from the camshaft. In some systems injection pressures can be as high as 200 MPa (30,000 PSI).

Safety

Because of the need for positive injection into a very high-pressure environment, the pump develops great pressure—typically 15,000 psi (100 MPa) or more on newer systems. This is a good reason to take great care when working on diesel systems; escaping fuel at this sort of pressure can easily pe*****te skin and clothes, and be injected into body tissues with medical consequences serious enough to warrant amputation.

Construction


Inline diesel injection pump
Earlier diesel pumps used an in-line layout with a series of cam-operated injection cylinders in a line, rather like a miniature inline engine. The pistons have a constant stroke volume, and injection volume (i.e., throttling) is controlled by rotating the cylinders against a cut-off port that aligns with a helical slot in the cylinder. When all the cylinders are rotated at once, they simultaneously vary their injection volume to produce more or less power from the engine. Inline pumps still find favour on large multi-cylinder engines such as those on trucks, construction plant, static engines and agricultural vehicles.


Distributor diesel injection pump
For use on cars and light trucks, the rotary pump or distributor pump was developed. It uses a single injection cylinder driven from an axial cam plate, which injects into the individual fuel lines via a rotary distribution valve. Later incarnations such as the Bosch VE pump vary the injection timing with crank speed to allow greater power at high crank speeds, and smoother, more economical running at slower revs. Some VE variants have a pressure-based system that allows the injection volume to increase over normal to allow a turbocharger or supercharger equipped engine to develop more power under boost conditions.


Inline diesel metering pump
All injection pumps incorporate a governor to cut fuel supply if the crank speed endangers the engine - the heavy moving parts of diesel engines do not tolerate overspeeding well, and catastrophic damage can occur if they are over-revved.

New types

Mechanical pumps are gradually being phased out in order to comply with international emissions directives, and to increase performance and economy. Alternatives include common rail diesel systems and electronic unit direct injection systems. These allow for higher pressures to be developed, and for much finer control of injection volumes compared to mechanical systems.