Injector pump is constant injection pressure and predispensing and the precursor system

摘要

Injector pump premetered sending a quantity of fuel has an injector 17 has a needle 18 of the type comprising a piston 21 and a chamber 20 of discharge, characterizes by the fact that it comprises a delivery piston 5 is a mechanical control cam or eccentric according to a law of motion, this piston pushes the fuel in a delivery chamber 6 and an injection piston 9 operates only in the three-dimensional pressure in the delivery chamber 6 with a return spring 13, the piston drives the fuel in an injection chamber 12 for supplying the injector 17, in addition, with a pressure regulator 19 limiting the pressure in the delivery chamber 6 has a value high but preset and independent the diet of the motor as well as of the load that -.