X hits on this document

PDF document

Caterpillar 3126B - page 18 / 26

160 views

0 shares

0 downloads

0 comments

18 / 26

TL960 SERVICE MANUAL

Page 13-18

High pressure oil flows around poppet to the top of intensifier piston.

Pressure on the top of the intensifier forces it down along with the plunger. The downward movement of the plunger pressurizes the fuel in the plunger cavity and nozzle. When the fuel pressure reaches Valve Opening Pressure (VOP) of about 4,500 psi, the nozzle valve lifts off its seat and injection begins.

As long as the solenoid is energized, the poppet remains open and pressurized oil continues to flow in, pushing down the intensifier and plunger. Injection pressure ranges from 5,000-21,000 psi depending on engine requirements. Injection continues until the solenoid is deenergized, allowing the poppet spring to close the poppet and shut off the high pressure oil.

Document info
Document views160
Page views182
Page last viewedSat Jan 21 22:27:50 UTC 2017
Pages26
Paragraphs469
Words6359

Comments