Method and system for operating a cam-driven pump
AssigneeGM Global Technology Operatons LLC
InventorsMassimiliano Melis, Francesco Concetto Pesce, Stefano Nieddu, Andrea Mollar
Life of this patent
Estimating the term…
Abstract
A method for automatically operating a cam-driven pump is disclosed. The pump is monitored to determine whether a specified detachment condition or potential detachment of an actuator of the pump from a driving cam is occurring. The pump is operated in a minimal pressure holding mode to provide a minimal pressure within a working chamber of the pump so as to bias the actuator towards the cam if it is determined that the detachment condition is occurring.
Claims17
A method for automatically operating a cam-driven pump comprising:
- determining whether a detachment condition indicating detachment of an actuator of the pump from a driving cam is fulfilled;
- and
- operating the pump in a minimal pressure holding mode to provide a minimal pressure within a working chamber of the pump so as to bias the actuator towards the cam when it is determined that the specific detachment condition is fulfilled.
A control system for automatically operating a cam-driven pump, comprising a controller configured to:
- determine whether a detachment condition indicating detachment of an actuator of the pump from a driving cam is fulfilled;
- and
- operate the pump in a minimal pressure holding mode to provide a minimal pressure within a working chamber of the pump so as to bias the actuator towards the cam when a specific detachment condition is fulfilled.
A pump arrangement comprising:
- a cam-driven pump having a working chamber, an inlet port and an outlet port in fluid communication with the working chamber, a driving cam and an actuator operably coupled to the driving cam for displacement in the working chamber;
- a valve arrangement having an inlet valve in fluid communication with the inlet port and an outlet valve in fluid communication with the outlet port;
- and
- a controller configured to:
- determine whether a detachment condition indicating detachment of the actuator from the driving cam;
- and
- operate the pump in a minimal pressure holding mode to provide a minimal pressure within the working chamber for biasing the actuator towards the driving cam when a specific detachment condition is fulfilled.
Dependencies are inferred from the claim text.