Pump for dosing fluids
AssigneeDelphi Technologies Holding S.arl
InventorsKEITH E. WRIGHT, MICHAEL PETER COOKE, NEIL C. SMITH, MARTIN PAUL HARDY, IVAN C. LAWFORD, KEVIN S. STANBURY
Life of this patent
Estimating the term…
Abstract
A pumping assembly is provided which is suitable for use in a variety of dosing pumps. The pumping assembly comprises a pump body with a pump bore, and a sleeve fixed within the pump bore. The sleeve has a first end, a second end and a sleeve bore. A plunger is adapted to enter the first end of the sleeve and to reciprocate within the sleeve bore. The sleeve has at least one port to allow fluid flow through a wall of the sleeve. The, or each, port is elongated in a direction substantially orthogonal to a direction of reciprocation.
Claims14
A pumping assembly comprising:
- a pump body with a pump bore, and a sleeve fixed within the pump bore and having a first end, a second end and a sleeve bore;
- and
- a plunger adapted to enter the first end of the sleeve and to reciprocate within the sleeve bore;
- wherein the sleeve has at least one port to allow fluid flow through a wall of the sleeve, and wherein the at least one port is elongated in a direction substantially orthogonal to a direction of reciprocation.
A pump for dosing a chemical reagent into an exhaust pipe of an internal combustion engine, said pump comprising a pumping assembly having:
- a pump body with a pump bore, and a sleeve fixed within the pump bore and having a first end, a second end and a sleeve bore;
- and
- a plunger adapted to enter the first end of the sleeve and to reciprocate within the sleeve bore;
- wherein the sleeve has at least one port to allow fluid flow through a wall of the sleeve, and wherein the at least one port is elongated in a direction substantially orthogonal to a direction of reciprocation.
A method of manufacturing a pumping assembly comprising:
- forming a pump body with a pump bore;
- forming a sleeve having a first end, a second end and a sleeve bore, and forming at least one port in the sleeve capable of allowing fluid flow through a wall of the sleeve;
- fixing the sleeve in the pump bore;
- and
- mounting a plunger such that it enters the first end of the sleeve and such that it is adapted to reciprocate within the sleeve bore wherein the at least one port is elongated in a direction substantially orthogonal to a direction of reciprocation.
Dependencies are inferred from the claim text.