Control valve assembly
AssigneeCaterpillar Inc.
InventorsCraig Hittle, Eric Schroeder
Life of this patent
Estimating the term…
Abstract
A control valve assembly for an engine system having a turbocharger system. The control valve is configured to control the position of a turbine actuator and a compressor actuator by directing hydraulic fluid into the proper passages. The control valve assembly includes a hydraulic powered bypass valve that, when energized, can reduce flow restriction of the hydraulic fluid, and can increase the speed of actuation of the turbine actuator.
Claims18
A control valve assembly for an engine system having a turbine with a turbine valve, an engine control module, a hydraulic fluid reservoir, and hydraulic fluid, the engine control module operable to send turbo valve commands, the control valve assembly comprising:
- a hydraulic fluid supply inlet;
- a hydraulic fluid supply inlet passage in fluid communication with the hydraulic fluid supply inlet;
- a control valve passage in fluid communication with the hydraulic fluid supply inlet passage;
- a control valve partially positioned within the control valve passage;
- a turbine closed passage in fluid communication with the control valve passage;
- a compressor closed inlet in fluid communication with the turbine closed passage;
- a compressor closed outlet;
- a first hydraulic fluid drain passage in fluid communication with the compressor closed outlet;
- a hydraulic fluid drain outlet in fluid communication with the first hydraulic fluid drain passage;
- a second hydraulic fluid drain passage extending from the first hydraulic fluid drain passage to the turbine closed passage;
- a turbine open passage in fluid communication with the control valve passage;
- a bypass passage in fluid communication with the turbine open passage, the bypass passage extending from the turbine open passage towards the second hydraulic fluid drain passage;
- and
- a bypass valve located between the bypass passage and the second hydraulic fluid drain passage.
A turbocharger system for an engine system having an engine control module and a hydraulic fluid reservoir containing hydraulic fluid, the turbocharger system comprising:
- a control valve assembly having
- a hydraulic fluid supply inlet configured to receive the hydraulic fluid from the hydraulic fluid reservoir;
- a hydraulic fluid supply inlet passage in fluid communication with the hydraulic fluid supply inlet;
- a control valve passage in fluid communication with the hydraulic fluid supply inlet passage;
- a control valve partially positioned within the control valve passage, configured to move to direct hydraulic fluid out of the control valve passage in different directions;
- a turbine closed passage in fluid communication with the control valve passage;
- a compressor closed inlet in fluid communication with the turbine closed passage;
- a compressor closed outlet;
- a first hydraulic fluid drain passage in fluid communication with the compressor closed outlet;
- a hydraulic fluid drain outlet in fluid communication with the first hydraulic fluid drain passage;
- a second hydraulic fluid drain passage in fluid communication with the first hydraulic fluid drain passage, the second hydraulic fluid drain passage extending from the first hydraulic fluid drain passage to the turbine closed passage;
- a turbine open passage in fluid communication with the control valve passage;
- a bypass passage in fluid communication with the turbine open passage, the bypass passage extending from the turbine open passage towards the second hydraulic fluid drain passage;
- and
- a bypass valve configured to provide fluid communication between the bypass passage and the second hydraulic fluid drain passage in response to a pressure of the hydraulic fluid reaching a predetermined level.
A control valve assembly for an engine system having turbine with a turbine valve, an engine control module, a hydraulic fluid reservoir, and hydraulic fluid, the engine control module operable to send turbo valve commands, the control valve assembly comprising:
- a hydraulic fluid supply inlet;
- a hydraulic fluid supply inlet passage in fluid communication with the hydraulic fluid supply inlet;
- a control valve passage in fluid communication with the hydraulic fluid supply inlet passage;
- a turbine closed passage in fluid communication with the control valve passage;
- a turbine open passage in fluid communication with the control valve passage;
- a control valve operable to receive the turbo valve commands from the engine control module and change positions in response to a first turbo valve command to direct a flow of the hydraulic fluid from the control valve passage into the turbine open passage, the control valve operable to receive a second turbo valve command from the engine control module and change positions in response to the turbo valve commands to direct a flow of the hydraulic fluid from the control valve passage into the turbine closed passage;
- a compressor closed inlet in fluid communication with the turbine closed passage;
- a compressor closed outlet;
- a first hydraulic fluid drain passage in fluid communication with the compressor closed outlet;
- a hydraulic fluid drain outlet in fluid communication with the first hydraulic fluid drain passage;
- a second hydraulic fluid drain passage in fluid communication with the first hydraulic fluid drain passage, the second hydraulic fluid drain passage extending from the first hydraulic fluid drain passage to the turbine closed passage;
- a bypass passage in fluid communication with the turbine open passage, the bypass passage extending from the turbine open passage towards the second hydraulic fluid drain passage;
- and
- a bypass valve configured to open based on a pressure of the hydraulic fluid within the bypass passage and allow the second hydraulic fluid drain passage to be in fluid communication with the turbine closed passage.
Dependencies are inferred from the claim text.