Abstract: An actuator for a device such as a tappet of a valve. The actuator having a thermostatic operating element electrically heated by an electrical heating element, and including an operating piston. A proportional piston stroke regulator detects and controls the position of the operating piston. The proportional piston stroke regulator includes a piston travel detection device, that detects the actual position of the operating piston, connected to a conventional closed-loop controller which compares the measured piston position to a predetermined piston control position entered into the closed-loop controller. Based on the comparison, the closed-loop controller regulates the electrical supply to the electrical heating element.

Abstract: A device for regulating transmission oil temperature having a heat exchanger through which the oil flows and to which coolant from an internal combustion engine can be supplied through at least one valve controlled by a thermostatic operating element immersed in the oil, the device includes a flow control body attached to a heat exchanger in a flange-like manner, the flow control body containing an oil channel connected to an oil outlet of the heat exchanger into which a housing enclosing the thermostatic operating element projects for the detection of and response to the temperature of the oil exiting the heat exchanger, the thermostatic operating element having a work piston connected to an extension member which is connected to the at least one valve in the flow control body, the valve disposed between at least one coolant inlet and a coolant opening to the heat exchanger.

Abstract: An actuator for a device such as a valve controlling coolant for an automotive engine. The actuator has a base body on which is supported an electrically heatable thermostatic operating element having an operating piston that moves a motion transfer member that is in actuating engagement with a moveable actuating element of the device being actuated. The motion transfer member has a flange on which is supported a compression spring that maintains the motion transfer member in following engagement with the operating piston. The components of the actuator are enclosed within an outer housing that has a window of transparent material located so that when the components are in the Inactivated condition, the flange will not be visible through the window and when the components are activated, the flange will be visible through the window, thereby providing an indication of the condition of the actuator.

Abstract: A thermostatic valve arranged in the coolant circuit of an internal-combustion engine, has a main valve which is acted upon by cold coolant flow on the one side, and by hot coolant flow on the other side. The valve is actuated as a function of the coolant temperature by way of an expansion material element equipped with an electric heating device. To minimize the coldside influence onto the expansion material element, a capsule which stores the expansion material, has an end which limits the expansion material lower at the level of the closed main valve or on the mixing chamber side. At this end, a ring-shaped or sleeve-shaped heating element is arranged coaxially adjacent the control pin, or, individual heating elements are distributed along the circumference of the control pin in an adjacent manner.

Abstract: A method of cooling coolant in a coolant circuit of an internal combustion engine of a motor vehicle includes: evaluating parameters of the internal combustion engine and the motor vehicle with a thermostatic valve control device; based on the evaluation of the parameters, controlling with the thermostatic valve control device adjustment of a thermostatic valve for controlling coolant flow from a radiator and coolant flow from a bypass line around the radiator into a combined coolant flow to the internal combustion engine; communicating a signal based on the evaluation of the parameters from the thermostatic valve control device to a fan control device which controls operation of a fan that cools coolant in the radiator to a target temperature; and setting the target temperature of the fan control device through the communication. Subsequently, the fan control device controls the cooling by the fan as a function of the target temperature set by the signal received from the thermostatic valve control device.

Abstract: In connection with a thermostatic valve, in particular for regulating a coolant supply to a transmission fluid cooler, two valves are provided, which are respectively adjustable by means of thermostatic operating elements. Two thermostatic operating elements are associated with a valve and engage a valve element, which is adjustable for opening a second valve, in the same direction.

Abstract: A control valve having a sliding valve member body movable into valve closing position against a valve seat in an outflow conduit. The body has a conical outer end for controlling the flow through the valve and a plurality of fins extending radially from the outer end into engagement with the outflow conduit to guide the body.

Abstract: A thermostatic valve arrangement includes a stop element disposed at a fixed location on a shaft that extends from and is fixedly connected to a thermostatic element housing. The stop element is located between the housing and a retaining ring which retains a bypass valve disc slidably mounted on and in direct contact with the shaft, and the bypass valve disc is located between the retaining ring and the stop element. An abutment member is slidably mounted directly on the shaft between the housing and the stop member. A bypass spring urges the bypass valve disc into engagement with the retaining ring and an additional spring urges the abutment member into engagement with the stop element. A shoulder of the bypass valve disc engages the abutment member when it is displaced by a predetermined distance along the shaft toward the housing against the bypass spring. The shoulder extends axially along the shaft at a radial spacing therefrom which is sufficient to permit the stop element to move therein.

Abstract: An actuator with an electrically heatable operating element, the housing of the operating element being held stationary in a mount of a base body, and a transfer element, which comprises two plastic molded parts, is provided between the piston and the element to be adjusted.

Abstract: A thermostatic valve includes a valve housing and a preassembled construction unit insertable into the valve housing to form a complete assembly. The valve housing is stepped with a widest section closest to an insertion opening. The preassembled construction unit includes a thermostatic working element with restoring spring and movable valve elements.

Abstract: For a thermostatic valve in the coolant circulation system of an internal-combustion engine having an expansion material element penetrating the main valve for the cold-side stationary support and the hot-side driving connection with the valve disk of the main valve, it is provided for increasing the response characteristic of the thermostatic valve to act upon the expansion material element in the cold-side end section in addition by a hot coolant and/or to provide a metal film resistor as an electric heating device placed in the expansion material.

Abstract: A cooling system for an internal-combustion engine which is cooled by means of a liquid coolant and is arranged in a circulating system having a coolant radiator, to which circulating system at least one heat exchanger of an accessory device is connected by means of a switching valve. As a switching element for switching the valve element, a thermostatic working element is used which is loaded by means of a restoring spring, is acted upon by the coolant and is provided with an electric heater. The thermostatic working element contains an expansion material which is designed to a switching temperature which is higher than a maximal operating temperature of the coolant flowing to the thermostatic working element.