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| Number | Title | Issue Date |
| 8104435 | Cooling fan control Methods and systems are provided for reducing aerodynamic drag on a moving vehicle. One example method comprises, during a first vehicle moving condition, operating the cooling fan, and during a second vehicle moving condition, selectively applying a braking torque ... | 01/31/2012 |
| 8015954 | Cooling fan arrangement at a vehicle A radiator fan arrangement for a vehicle which is powered by a combustion engine. The radiator fan arrangement includes at least one cooling element for cooling a medium, and a first radiator fan for continuously generating a forced air flow through at least one fir... | 09/13/2011 |
| 8015953 | Electric cooling fan control based on known vehicle load conditions A method of controlling a cooling fan for an engine of a vehicle may entail determining an engine coolant temperature, providing a normal load operation mode for the cooling fan and a high load operation mode for the cooling fan, determining whether a tow-haul opera... | 09/13/2011 |
| 7921816 | Control device for hydraulically driven fan A control device for a hydraulically driven fan is provided with a cooling fan which is rotated by a hydraulic motor and carries out ventilation for cooling a working fluid. Further, the control device for the hydraulically driven fan is provided with a sensor for d... | 04/12/2011 |
| 7841307 | Cooling fan drive system for travel type working machine In a cooling fan drive system for a travel type working machine, the rotational speed of a cooling fan is controlled to the optimum rotational speed in accordance with temperature increase of the temperature of an engine cooling water, and the engine rotational spee... | 11/30/2010 |
| 7397354 | Cooling system monitoring system The invention relates to an engine cooling system monitoring system. There is a need for a cooling system monitoring system for an engine system wherein the coolant is maintained at a precise temperature. Thus, a cooling system monitoring system is provided for an e... | 07/08/2008 |
| 7395788 | Drill rig and a method for controlling a fan therein In a method for controlling at least one fan (13) for the regulation of the cooling demand of at least two cooling elements (12) included in a drill rig (1), the cooling demand of each one of the cooling elements (12) being determined, th... | 07/08/2008 |
| 7377237 | Cooling system for hybrid power system A cooling system for a hybrid power system that includes an engine employs an engine cooling circuit to deliver coolant to the engine, the engine cooling circuit including a radiator and a main fan to draw air through the radiator. When the hybrid power system furth... | 05/27/2008 |
| 7370812 | Control device of a vehicle radiator system A control device of a vehicle radiator system mainly has a temperature comparator, a temperature sensor, a keyboard and a display. The temperature sensor is positioned near an engine of the vehicle and outputs a detecting signal to the temperature comparator. Since ... | 05/13/2008 |
| 7367438 | External control type fan-coupling device An external-control-type fan coupling device is provided and has no restriction on the layout or positional relationship of an electromagnetic coil and a valve element of the device. As a result, the casing and the valve structure of the device can be simplified. Ad... | 05/06/2008 |
| 7364025 | Magnetorheological fan coupling A magnetorheological fan coupling (10) having an inverted construction with an input member (18) rotatably mounted to an output member (20). The input member (18) defines a fluid chamber (50) with the output member (20) rota... | 04/29/2008 |
| 7347167 | Method for controlling cooling fans A method for controlling a cooling system for an internal combustion engine having first and second cooling fans is provided, comprising operating the first cooling fan at a first rotational frequency which is greater than a combustion frequency of the internal comb... | 03/25/2008 |
| 7341026 | Propulsion system and method for optimising power supply to the cooling system thereof A drive train system having a driving engine that has a cooling system for cooling the driving engine is provided. The cooling system has a coolant circuit, a cooling device, and a fan that is associated with the cooling device and that is in driveline connection wi... | 03/11/2008 |
| 7337769 | Charge air cooler having refrigerant coils and method for cooling charge air An apparatus and a method for cooling charge air, comprising the steps of introducing a cooling agent into at least one cooling agent conduit whereby the at least one cooling agent conduit is cooled (Step 401), flowing thermally charged air through a pluralit... | 03/04/2008 |
| 7331437 | Friction clutch assembly having a spiral snap ring friction liner retention device A friction clutch assembly for use in an on/off fan drive is provided having a simplified method for retention of the friction liner between the clutch housing and rotating drive shaft. The friction clutch assembly introduces a groove within the inner rearward porti... | 02/19/2008 |
| 7331760 | Fan revolution speed control method Actual temperatures of intake air, hydraulic oil, and coolant, to be cooled by a cooling fan, are detected. Target fan revolution speeds are determined by PI control units based on differences between the actual temperatures and target temperatures. The cooling fan ... | 02/19/2008 |
| 7318553 | Apparatus and method for heating fluids An apparatus for heating a liquid includes a housing having an internal chamber and a rotor disposed in the chamber. The rotor is preferably cylindrical and operates inside a bore provided by the housing without touching, the shape of the bore preferably being paral... | 01/15/2008 |
| 7318510 | Liquid friction clutch A drive for a cooling fan at motor vehicles including a main cooling circuit and at least one secondary cooling circuit using a fluid friction clutch including a control element for the drive of the cooling fan is described. In case of a plurality of cooling ... | 01/15/2008 |
| 7311185 | Method for thermal management for a controllable viscous fan drive The present invention provides a method of controlling thermal energy within a fan drive. The fan drive includes an input member rotating at an input speed, and an output member attached to the fan and rotating at a fan speed, with a viscous fluid disposed therebetw... | 12/25/2007 |
| 7304404 | Fan system for vehicles and method for controlling fan in vehicles A fan system is provided which keeps a record of the electric connection between a battery ECU and an accessory battery and starts a fan if it is determined based on the record that the electric connection between the battery ECU and the accessory battery was just i... | 12/04/2007 |
| 7293535 | Cooling module for the engine of a motor vehicle The invention relates to a cooling module for an engine (1) of a motor vehicle. Said cooling module comprises a heat exchanger (4), at least one fan (16) and a coolant pump (8), whereby a modular frame (3) forms an integral part of... | 11/13/2007 |
| 7293636 | Electronically controlled viscous fan drive having cast channels An electronically-controlled viscous fan drive in which the output drive to the fan is electronically controlled by the movement of viscous fluid from a fluid reservoir and into the operating and working chamber of the coupling during normal operation. A radially ba... | 11/13/2007 |
| 7278475 | Control arrangement for cooling power electronic components A control arrangement (10) comprises a first selectable controller (12) for controlling an action, and a second selectable controller (14) for controlling the action. The arrangement also includes a selector (22) for selecting one of the ... | 10/09/2007 |
| 7275368 | Fan revolution speed control method The invention is a fan revolution control method for controlling a pump-motor system, by controlling the fan revolution speed of a cooling fan adapted to be rotated by a fan motor to cool cooling target fluids. The pump-motor system drives the fan motor by a hydraul... | 10/02/2007 |
| 7275510 | Startup-time control apparatus and stop-time control apparatus of internal combustion engine, and control methods thereof, and record medium If it is determined that the present engine startup is a high-temperature startup, immediately fuel injection in concert with start of cranking is prohibited. After a delay time elapses following the start of cranking, or when THC | 10/02/2007 |
| 7267085 | Method of engine cooling This invention relates to a method of cooling an engine for an automobile. The method operates using a predictive, feed-forward element combined with a fuzzy logic feedback controller to achieve accurate control over engine temperature. The fuzzy logic feedback is o... | 09/11/2007 |
| 7261068 | Vehicular thermostatically-controlled dual-circuit cooling system and associated method A dual-circuit cooling system for a vehicle is disclosed. One of the circuits may be used to manage the temperature of the engine while the other circuit may be used to manage the temperature of a component other than the engine. An associated method is disclosed. | 08/28/2007 |
| 7260468 | Control strategy for an internal combustion engine In accordance with an embodiment of the present invention, a method of controlling an internal combustion engine system having an internal combustion engine is disclosed. The internal combustion engine includes an engine block defining a plurality of combustion cham... | 08/21/2007 |
| 7254947 | Vehicle cooling system A vehicle engine cooling system includes a primary cooling circuit having a primary radiator and a coolant pump. A secondary cooling circuit includes a secondary radiator, an EGR cooler, and a liquid/air charge air pre-cooler receiving engine inlet air from a turboc... | 08/14/2007 |
| 7240485 | Power steering system A power steering system for a vehicle includes a hydraulic pump connected to a power steering gear of the vehicle and a fluid coupling interconnecting a drive shaft of an engine of the vehicle with the hydraulic pump. The power steering system also includes an elect... | 07/10/2007 |
| 7216608 | Engine cooling apparatus It is an object of the invention to provide an engine cooling apparatus that cools an engine according to an operation state of an engine driven work machine. The invention provides an engine cooling apparatus that is adapted to, in an engine drive work machine incl... | 05/15/2007 |
| 7178648 | Electrical activation of a viscous clutch A system for controlling the engagement and disengagement of a viscous type coupling is accomplished by controlling the relative positioning of a spring loaded valve arm relative to a fluid port through the use of an electrically-activated, temperature-sensitive wir... | 02/20/2007 |
| 7178656 | Hydraulic controlled fan clutch with integral cooling A hydraulically controlled fan drive system (12) having a method of engagement includes a housing assembly (20) containing a hydraulic fluid (48) and an engaging circuit (36). The engaging circuit (36) includes a pitot tube (152... | 02/20/2007 |
| 7177151 | Cooling devices and systems Methods, systems, and devices are provided for cooling a heat source. One apparatus embodiment includes a housing, a fluid conduit, a pump within the housing and in communication with the fluid conduit for conveying fluid through the fluid conduit, and a turbine in ... | 02/13/2007 |
| 7168399 | Abnormality diagnosis apparatus and engine cooling system having the same A coolant temperature of coolant in a circulation line system is measured through a coolant temperature sensor and is controlled by controlling a flow rate control valve. The flow rate control valve is diagnosed to determine whether abnormality of the flow rate cont... | 01/30/2007 |
| 7165514 | Variable speed fan drive A variable fan drive for a vehicle powered by an internal combustion engine is provided. A drive side assembly utilizes a hydraulic actuator to actuate a variable sheave assembly. The variable sheave assembly drives a sheave assembly of a driven side assembly by way... | 01/23/2007 |
| 7159409 | Method and apparatus for controlling the load placed on a compressor A method of operating a vapor compression system, the vapor compression system defining a closed fluid circuit in which a refrigerant is circulated and having operably disposed therein, in serial order, a compressor, a high pressure heat exchanger, an expansion devi... | 01/09/2007 |
| 7161315 | Self dust-off apparatus and method thereof A self dust-off apparatus includes a fan and a controller. The fan, which can be driven to rotate clockwise or counterclockwise, is installed in a projector. The controller is employed to direct the rotational direction (clockwise or counterclockwise) of the fan. In... | 01/09/2007 |
| 7146825 | Refrigerator Disclosed is a refrigerator comprising: a compressor installed in a machine chamber for compressing refrigerant of low temperature and low pressure into refrigerant of high temperature and high pressure; a condenser upright installed at one inner side of the machine... | 12/12/2006 |
| 7137362 | Bi-assembly spring end cap for vehicle on/off fan drive to improve seal life, reduce vibration input loading to ball bearings and reduce component cost An on/off clutch assembly is disclosed having a two component spring end cap. The spring end cap includes a steel cap portion and a non-metallic portion. The non-metallic portion extends along the entire length of the steel cap portion and is located between the ste... | 11/21/2006 |
