Control system
AssigneeJ.C. Bamford Excavators Limited
InventorsStephen Paul Slater, Matthew Cook, Mark David Van der Cruyssen, Paul Stephen McCarthy
Life of this patent
Estimating the term…
Abstract
A control system is provided for a diesel particulate filter (DPF) system of a diesel engine configured for operation in an off-highway vehicle. The control system includes a controller configured to receive a signal corresponding to a fill state of the DPF being at or above a first threshold. The controller is configured to selectively induce a parasitic load on the diesel engine to increase an operating temperature of the engine in response to receiving the signal.
Claims20
A control system for a diesel particulate filter (DPF) system of a diesel engine of an engine system, configured for operation in an off-highway vehicle, the control system comprising:
- a controller configured to receive a signal corresponding to a fill state of the DPF being at or above a first threshold,
- wherein the controller is configured to selectively induce a parasitic load on the diesel engine to increase an operating temperature of the engine in response to receiving the signal.
An off-highway vehicle or a working machine comprising:
- engine system comprising:
- a diesel engine;
- a diesel particulate filter (DPF) system comprising a DPF and a sensor configured to monitor a fill state of the DPF and to generate a signal when the fill state of the DPF is at or above a first threshold;
- a control system comprising a controller,
- wherein the controller is configured to receive the signal and to selectively induce a parasitic load on the diesel engine to increase the diesel engine operating temperature in response to receiving the signal corresponding to the fill state of the DPF being at or above a first threshold.
A control system for a diesel particulate filter (DPF) system of a diesel engine of an engine system, configured for operation in an off-highway vehicle, the control system comprising:
- a controller configured to receive a signal corresponding to a fill state of the DPF being at or above a first threshold,
- wherein the controller is configured to selectively induce a parasitic load on the diesel engine to increase an operating temperature of the engine in response to receiving the signal,
- wherein the hydraulic system incorporates a hydraulic load valve, and wherein the controller is configured to selectively actuate the hydraulic load valve to induce the parasitic load onto the hydraulic system, and
- wherein the hydraulic system comprises a hydraulic circuit, wherein the hydraulic circuit comprises one or more hydraulic valves configured to selectively divert hydraulic fluid from the hydraulic circuit to power one or more hydraulic actuators, wherein the hydraulic circuit comprises a bypass flow path arranged such that only hydraulic fluid not diverted to power the one or more hydraulic actuators flow along said bypass flow path, and wherein the hydraulic load valve is arranged on a carryover port of the hydraulic circuit.
Dependencies are inferred from the claim text.