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公开(公告)号：AU5528873A
公开(公告)日：1974-11-07
申请号：AU5528873
申请日：1973-05-04
Applicant: STANADYNE INC
Inventor： DAVIS CHARLES WADE
Abstract: A fuel injection pump is provided with timing control in which a hollow cap removably mounted in a bore of the fuel pump forms a pressure chamber in which the advance piston is axially movable for controlling the timing of injection. An annulus around the cap provides a passage for the delivery of pressurized fuel to the pressure chamber and a flat reed valve in the pressure chamber overlying the inlet port of the pressure chamber isolates the ring seals for sealing the annulus from the repetitive high pressure pulses imposed when the pumping plungers move past the cam lobes during pumping strokes which otherwise may cause the seals to be extruded into the clearance gap between the cap and the bore.
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公开(公告)号：IN152494B
公开(公告)日：1984-01-28
申请号：IN815CA1980
申请日：1980-07-16
Applicant: STANADYNE INC
Inventor： DAVIS CHARLES WADE , DONAHUE CHARLES JAMES
Abstract: The liquid fuel injection pump has a longitudinal bore (12) with a rotary distributor (14) journaled in the bore and providing a pair of generally radial communicating non-coaxial bores forming a pumping chamber therein. A pair of pumping plungers (24) are slidably mounted in said non-coaxial bores with a cam ring (32) with cam lobes (34,34a) mounted about the axis of rotation of the pumping plungers (24) to impart simultaneous inward movement to the pumping plungers as the distributor rotates. The distributor (14) and the longitudinal bore (12) define chamber means (58) in continuous communication with the pumping chamber. The chamber means (58) are angularly disposed to create a hydraulic force on the distributor (14) substantially radially aligned with but in a direction opposite to the radial vector (A) of side loading imposed on the distributor (14) during pumping.
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公开(公告)号：DE3064401D1
公开(公告)日：1983-09-01
申请号：DE3064401
申请日：1980-07-14
Applicant: STANADYNE INC
Inventor： DAVIS CHARLES WADE , DONAHUE CHARLES JAMES
Abstract: The liquid fuel injection pump has a longitudinal bore (12) with a rotary distributor (14) journaled in the bore and providing a pair of generally radial communicating non-coaxial bores forming a pumping chamber therein. A pair of pumping plungers (24) are slidably mounted in said non-coaxial bores with a cam ring (32) with cam lobes (34,34a) mounted about the axis of rotation of the pumping plungers (24) to impart simultaneous inward movement to the pumping plungers as the distributor rotates. The distributor (14) and the longitudinal bore (12) define chamber means (58) in continuous communication with the pumping chamber. The chamber means (58) are angularly disposed to create a hydraulic force on the distributor (14) substantially radially aligned with but in a direction opposite to the radial vector (A) of side loading imposed on the distributor (14) during pumping.
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公开(公告)号：SU927130A3
公开(公告)日：1982-05-07
申请号：SU2403510
申请日：1976-10-01
Applicant: STANADYNE INC
Inventor： DAVIS CHARLES WADE
Abstract: A rotary distributor fuel injection pump is provided with a main high pressure pumping chamber and an auxiliary high pressure pumping chamber which have a common inlet and outlet passage. The pumping plungers in said pumping chambers operate in unison to generate simultaneous high pressure pulsed charges of fuel within the pumping chambers. Both pumping chambers are connected to deliver their high pressure outputs simultaneously to the output passage for delivery sequentially to each of the cylinders of an associated engine. A speed responsive valve controls the delivery of the output from the auxiliary pumping chamber to the common outlet passage and isolates the auxiliary chamber from the common inlet and outlet passage without impairing the connection of the main pumping chamber with the common inlet and outlet passage when engine speed reaches a predetermined level. A valving arrangement is provided to maintain the auxiliary pumping chamber in its isolated condition until the engine is essentially stopped.
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公开(公告)号：IN149549B
公开(公告)日：1982-01-16
申请号：IN1313CA1978
申请日：1978-12-12
Applicant: STANADYNE INC
Inventor： DAVIS CHARLES WADE
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.
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Patent Agency Ranking
公开(公告)号：DE2852749A1
公开(公告)日：1979-06-13
申请号：DE2852749
申请日：1978-12-06
Applicant: STANADYNE INC
Inventor： DAVIS CHARLES WADE
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.
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公开(公告)号：AU2360577A
公开(公告)日：1978-09-28
申请号：AU2360577
申请日：1977-03-24
Applicant: STANADYNE INC
Inventor： SALZGEBER DANIEL EDWIN , DAVIS CHARLES WADE , RAUFEISEN ROBERT
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公开(公告)号：AU1613776A
公开(公告)日：1978-01-26
申请号：AU1613776
申请日：1976-07-22
Applicant: STANADYNE INC
Inventor： DAVIS CHARLES WADE , RAUFEISEN ROBERT , SALZGEBER DANIEL EDWIN
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公开(公告)号：DE2643466A1
公开(公告)日：1977-04-28
申请号：DE2643466
申请日：1976-09-27
Applicant: STANADYNE INC
Inventor： DAVIS CHARLES WADE
Abstract: A rotary distributor fuel injection pump is provided with a main high pressure pumping chamber and an auxiliary high pressure pumping chamber which have a common inlet and outlet passage. The pumping plungers in said pumping chambers operate in unison to generate simultaneous high pressure pulsed charges of fuel within the pumping chambers. Both pumping chambers are connected to deliver their high pressure outputs simultaneously to the output passage for delivery sequentially to each of the cylinders of an associated engine. A speed responsive valve controls the delivery of the output from the auxiliary pumping chamber to the common outlet passage and isolates the auxiliary chamber from the common inlet and outlet passage without impairing the connection of the main pumping chamber with the common inlet and outlet passage when engine speed reaches a predetermined level. A valving arrangement is provided to maintain the auxiliary pumping chamber in its isolated condition until the engine is essentially stopped.
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公开(公告)号：DE2645565A1
公开(公告)日：1977-04-14
申请号：DE2645565
申请日：1976-10-08
Applicant: STANADYNE INC
Inventor： SALZGEBER DANIEL EDWIN , RAUFEISEN ROBERT , DAVIS CHARLES WADE
Abstract: A liquid fuel injection pump for supplying timed charges of fuel to an engine by timed pumping strokes includes an adjustable timing mechanism for changing the timing of the pumping strokes. The timing mechanism includes an advance piston which is variably positionable in response to two different hydraulic control pressures. A speed related control pressure operates a servo mechanism associated with the advance piston to provide a component of speed advance. The reference position of a servo spring associated with the servo mechanism is varied by the second control pressure acting against a piston which mounts the spring and which is biased to a position of relatively advanced timing, thereby to add a component of advance which modifies or supplements the speed advance. The second control pressure is correlated with engine load and/or acceleration and in one embodiment is derived from the positioning of the fuel metering means and in another embodiment is derived from the intake manifold air pressure such as that from a turbocharged engine so that the timing is relatively advanced at low loads and during acceleration, and is relatively retarded at higher loads. A gate controlled by the position of a fuel limiting plunger coacts with the advance piston's servo mechanism to prevent advance of the advance piston during engine cranking, and maximum fuel delivery per pumping stroke is controlled according to intake manifold air pressure.
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