公开(公告)号：AU526511B2

公开(公告)日：1983-01-13

申请号：AU4233178

申请日：1978-12-08

Applicant: STANADYNE INC

Inventor： DAVIS CHARLES WADE

IPC: F04B11/00 ,  F04B3/00 ,  F04B5/02 ,  F04B5/00

Abstract: A supply pump comprising a body having an inlet and an outlet both in fluid communication with an interior region of the body which contains two pistons positioned to reciprocate coaxially and which define three variable volume chambers, one between the two pistons and in fluid communication with the inlet, a second between one piston and the outlet and a third between the other piston and the outlet. The pistons have different working areas, and the piston of larger area carries a check valve which allows fluid flow from the chamber between the pistons to the chamber between the larger piston and the outlet. A regulating spring acts between the body and the smaller piston to urge both pistons against a mechanical drive means including a reciprocable rod carried by a tappet contacting a driven cam. During each forward and reverse stroke of the pistons in response to rotation of the cam, supply fluid is drawn into the pump through the inlet and forced out of the pump through the outlet.

公开(公告)号：DE2919574A1

公开(公告)日：1980-05-22

申请号：DE2919574

申请日：1979-05-15

Applicant: STANADYNE INC

Inventor： DAVIS CHARLES WADE

IPC: F02D1/18 ,  F02M41/14 ,  F02D1/16

Abstract: A fuel injection pump having a mechanically adjustable servo valve for controlling the timing of the pumping event is disclosed. A pivoted lever has one end which engages the spring seat of a timing control plunger servo valve which is also subjected to a speed related hydraulic signal and another end which engages a cam clamped on the throttle shaft to pivot the lever according to the rotational position of the shaft. The profile of the cam is such as to retard the timing of the pumping stroke when the charge delivered by the pump is increased so that pressure built up in the pump is delayed and injection pressure is reached at a substantially constant crankshaft angle regardless of variations in speed and load on the engine. The mechanism is failsafe since it cannot interfere with the movement of the throttle shaft to reduce fuel delivery.

公开(公告)号：AU4661379A

公开(公告)日：1980-05-22

申请号：AU4661379

申请日：1979-05-01

Applicant: STANADYNE INC

Inventor： DAVIS CHARLES WADE

IPC: F02D1/18 ,  F02M41/14 ,  F02M59/36

Abstract: A fuel injection pump having a mechanically adjustable servo valve for controlling the timing of the pumping event is disclosed. A pivoted lever has one end which engages the spring seat of a timing control plunger servo valve which is also subjected to a speed related hydraulic signal and another end which engages a cam clamped on the throttle shaft to pivot the lever according to the rotational position of the shaft. The profile of the cam is such as to retard the timing of the pumping stroke when the charge delivered by the pump is increased so that pressure built up in the pump is delayed and injection pressure is reached at a substantially constant crankshaft angle regardless of variations in speed and load on the engine. The mechanism is failsafe since it cannot interfere with the movement of the throttle shaft to reduce fuel delivery.

公开(公告)号：FR2386693A1

公开(公告)日：1978-11-03

申请号：FR7710526

申请日：1977-04-07

Applicant: STANADYNE INC

Inventor： SALZGEBER DANIEL EDWIN ,  RAUFEISEN ROBERT ,  DAVIS CHARLES WADE

IPC: F02M41/14 ,  F02M59/46

Abstract: The liquid fuel injection pump is for supplying measured charges of fuel to an internal combustion engine. It comprises a distributor rotor having a transverse bore extending through it and a pump chamber in which the charges are pressurised to high pressure for injection into the cylinders of the engine. A transfer pump feeds a passage for delivering it's output to the pump chamber through the transverse bore, and a replaceable check valve cartridge is slidably mounted in the transverse bore. The check valve cartridge comprises a prefabricated integral check valve assembly comprising a cylindrical barrel having a single diameter, a hollow valve seat secured to the barrel at one end, a stop secured to the barrel at the other end, a ball for seating on said valve seat and a chamber in the barrel between the valve seat and the stop.

公开(公告)号：DE2632426A1

公开(公告)日：1977-02-10

申请号：DE2632426

申请日：1976-07-19

Applicant: STANADYNE INC

Inventor： DAVIS CHARLES WADE ,  RAUFEISEN ROBERT ,  SALZGEBER DANIEL EDWIN

IPC: F02D1/02 ,  F02M41/14 ,  F02M59/20

公开(公告)号：AU6283073A

公开(公告)日：1975-05-22

申请号：AU6283073

申请日：1973-11-22

Applicant: STANADYNE INC ,  ROOSA V D

Inventor： DAVIS CHARLES WADE ,  ROOSA VERNON DAVIS

IPC: F02M61/10 ,  F02M61/12 ,  F02M61/16

Abstract: A precision fuel injector having an inwardly opening pressure operated valve positioned in a bore forming a valve chamber and guided for reciprocal movement to open and close the valve wherein the valve guide at the end of the valve chamber opposite the valve tip is provided with a sleeve extending into the valve chamber to provide an integral filter. The sleeve is interposed between the fuel inlet and the valve chamber and provides communication therebetween through a pair of annular clearances having a width which is one-half or less of the diameter of the discharge orifices of the injector to trap solid particles and prevent the blockage thereof. The filter construction retains the trapped particles in the flow path where the velocity of fuel flow is maximum to subject them to the repetitive high pressure hydraulic forces as sequential measured charges of fuel are delivered to the injector to hammer them against the hardened metal edge of the filter and pulverize them to render the filter self-cleaning.

公开(公告)号：DE2358962A1

公开(公告)日：1974-05-30

申请号：DE2358962

申请日：1973-11-27

Applicant: ROOSA VERNON D ,  STANADYNE INC

Inventor： DAVIS CHARLES WADE ,  ROOSA VERNON DAVIS

IPC: F02M61/10 ,  F02M61/12 ,  F02M61/16 ,  F02M61/04

Abstract: A precision fuel injector having an inwardly opening pressure operated valve positioned in a bore forming a valve chamber and guided for reciprocal movement to open and close the valve wherein the valve guide at the end of the valve chamber opposite the valve tip is provided with a sleeve extending into the valve chamber to provide an integral filter. The sleeve is interposed between the fuel inlet and the valve chamber and provides communication therebetween through a pair of annular clearances having a width which is one-half or less of the diameter of the discharge orifices of the injector to trap solid particles and prevent the blockage thereof. The filter construction retains the trapped particles in the flow path where the velocity of fuel flow is maximum to subject them to the repetitive high pressure hydraulic forces as sequential measured charges of fuel are delivered to the injector to hammer them against the hardened metal edge of the filter and pulverize them to render the filter self-cleaning.