David R. Staley - Flushing MI, US Bryan K. Pryor - Farmington MI, US
Assignee:
GM Global Technology Operations, Inc. - Detroit MI
International Classification:
F04B 49/00
US Classification:
417220, 417219, 418 26, 418 27, 418 30
Abstract:
A variable displacement engine oil vane pump includes a displacement control for controlling displacement of the pump. The control includes a cam ring in a housing pivotally connected to a wall of the housing by a pivot. The cam ring is internally engaged by slide vanes. A control chamber is defined by the cam ring and the housing wall. A control orifice provides for communication of control oil from a pressurized source to the control chamber. A vent chamber is generally opposite the control chamber and is defined by the cam ring and the housing wall. A dump chamber is defined by the cam ring and the housing wall and is generally disposed between the control chamber and the vent chamber. A dump orifice provides for communication between the control chamber and the dump chamber. A vent orifice provides for communication between the vent chamber and the dump chamber.
In-Vehicle Alert Of Cloud Point In Engine Diesel Fuel
Bryan K. Pryor - Farmington MI, US William C. Albertson - Clinton Township MI, US Mike M. Mc Donald - Macomb MI, US Jeffrey D. Lines - Plymouth MI, US
Assignee:
GM Global Technology Operations LLC - Detroit MI General Motors LLC - Detroit MI
International Classification:
G01C 21/34
US Classification:
701 29, 701 31, 701 33, 701 35
Abstract:
The disclosure relates to a method for receiving in-vehicle information regarding diesel fuel cloud point condition. The method includes establishing communication between a telematics unit in a vehicle and i) a global positioning system device, ii) a call center including a database, and iii) a cloud point monitoring device in the vehicle. The telematics unit receives from at least one of i, ii, or iii, information pertaining to vehicle location, cloud point, and ambient temperature. The telematics unit determines from the information whether fuel in a fuel system of the vehicle is reaching cloud point or can reach cloud point within a given time period. The telematics unit then transmits an in-vehicle alert when the fuel in the vehicle fuel system is reaching cloud point or can reach cloud point within a given time period. The disclosure also relates to a system for performing the method.
In an exemplary embodiment, the momentum of oil-containing air rotating with a crankshaft counterweight in an engine crankcase is converted to static pressure by blocking the flow and directing the resulting static pressure through an orifice to a vent chamber wherein the pressure acts against a cam ring of a variable displacement oil pump. The arrangement modifies the action of an oil pressure control by increasing the effective pump outlet pressure as a function of engine speed using relatively low cost modifications of the engine and oil pump. This pressure may also be used in various ways to modify the control functions of other devices.
David R. Staley - Flushing MI, US Bryan K. Pryor - Farmington MI, US William C. Albertson - Clinton Township MI, US Timothy L. Neal - Ortonville MI, US Mike M. McDonald - Macomb MI, US
International Classification:
G01N 33/26 F01M 1/04
US Classification:
73 5305, 184 65, 123196 R
Abstract:
An engine oil system comprises an oil condition sensing device and a control module. The oil condition sensing device includes an electrically actuated member and is in fluid communication with an engine oil reservoir. The control module selectively causes current to be supplied to the oil condition sensing device to actuate the member, measures the current, determines a parameter of the current, and selectively identifies at least two of an oil level, an oil change event, and an oil viscosity level based on the parameter.
Cloud Point Monitoring Systems For Determining A Cloud Point Temperature Of Diesel Fuel
Bryan K. Pryor - Farmington MI, US William C. Albertson - Clinton Township MI, US
Assignee:
GM Global Technology Operations LLC - Detroit MI
International Classification:
G01N 25/00
US Classification:
374 16, 702 50
Abstract:
Cloud point monitoring systems for determining a cloud point of diesel fuel are provided. In one exemplary embodiment, a cloud point monitoring system determines a cloud point temperature value utilizing signals indicating a viscosity level of diesel fuel and a temperature of the diesel fuel.
Bryan K. Pryor - Farmington MI, US David R. Staley - Flushing MI, US Bryce E. Mazzola - Dryden MI, US
Assignee:
GM Global Technology Operations LLC - Detroit MI
International Classification:
F01M 9/10
US Classification:
123196R
Abstract:
A dynamic engine oil pickup system is disclosed. The dynamic engine oil pickup system includes a scavenge pump and a pickup tube assembly in fluid communication with the scavenge pump. The pickup tube assembly includes at least two oil pickup portions operable to pickup engine oil from at least two different oil pickup locations and a flow control operable to control a flow of engine oil between the at least two different oil pickup locations and the scavenge pump. The flow control includes a suction valve, and movement of the suction valve is controlled by selectively applying a high pressure oil to a head of the suction valve.
Michael G. Reynolds - Troy MI, US Bryan K. Pryor - Farmington MI, US William C. Albertson - Clinton Township MI, US Mike M. McDonald - Macomb MI, US
Assignee:
GM Global Technology Operations LLC - Detroit MI
International Classification:
F01M 1/08 F01M 1/14 F01M 1/16
US Classification:
123196R, 184 63
Abstract:
An engine having a fluid lubrication and control system is provided. The engine also includes a pump configured to maintain fluid pressure in the lubrication and control system when the engine is running. The engine additionally includes an accumulator in fluid communication with the lubrication and control system. The accumulator is configured to accumulate and retain fluid when the engine is running, and to discharge the fluid when the engine is not running in order to maintain fluid pressure in the lubrication and control system. A method for controlling oil pressure in the engine is also provided.
Cloud Point Monitoring Systems For Determining A Cloud Point Temperature Of Diesel Fuel
Bryan K. Pryor - Farmington MI, US William C. Albertson - Clinton Township MI, US Mike M. McDonald - Macomb MI, US
Assignee:
GM Global Technology Operations LLC - Detroit MI
International Classification:
G01N 25/12 G01N 25/36 G01N 25/14
US Classification:
374 19, 374141, 374147, 374 28, 374135, 374144
Abstract:
Cloud point monitoring systems for determining a cloud point temperature value for diesel fuel are provided. In one exemplary embodiment, a cloud point monitoring system receives diesel fuel in the tubular conduit and propagates light through the diesel fuel. The cloud point monitoring system further determines a cloud point temperature value indicative of a cloud point of the diesel fuel based on a light intensity level of the light that has propagated through cooled diesel fuel.