Thermostat valve for a coolant circuit
AssigneeFord Global Technologies, LLC
InventorsHans Guenter Quix, Antonio Farina, Jan Mehring, Stefan Quiring
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for a valve. In one example, a system may include a cooling arrangement including the valve, wherein the valve is configured to variably adjust coolant flow rates in response to one or more of a coolant temperature and a charge air pressure. The valve includes a transmission pin which may be acted upon via an expansion element and/or a pressure actuator.
Claims19
A thermostat valve for controlling the flow of a fluid medium in a coolant circuit of a pressure-chargeable internal combustion engine, the thermostat valve comprising:
- an expansion element operatively connected to a transmission pin of the valve, wherein the expansion element moves the transmission pin via phase-changing in response to a temperature of the fluid medium;
- an actuator operatively connected to the transmission pin, wherein the actuator is controlled in response to a pressure outside of the valve;
- and
- at least one first connection, at least one second connection, and at least one third connection, wherein an opening of the second connection is controlled via a first valve disk connected to the transmission pin and moved to or away from a first valve seat, and wherein an opening of the third connection is controlled via a second valve disk connected to the transmission pin, the second valve disk moved to and away from a second valve seat;
- wherein
- a third valve seat, configured to contact the second valve disk, is arranged upstream of the second valve seat relative to a direction of coolant flow, and wherein the opening of the third connection is adjusted based on the second valve disk moving between the third valve seat and the second valve seat, and wherein the third connection is sealed via pressing the second valve disk against the second valve seat or the third valve seat.
A system, comprising:
- an engine;
- a compressor arranged in an intake passage coupled to the engine;
- a cooling system coupled to a cooling jacket of the engine;
- and
- a valve comprising a first connection fluidly coupled to an outlet of the cooling jacket, the valve further comprising a second connection fluidly coupled to a heat exchanger, and wherein the valve further comprises a third connection fluidly coupled to a bypass configured to direct coolant away from the heat exchanger back to the cooling jacket, the valve further comprising a first valve disk and a second valve disk, wherein the first connection is sealed via pressing the first valve disk against the a first valve seat, and wherein the third connection is sealed via pressing the second valve disk against a second valve seat or a third valve seat;
- wherein
- an expansion element and a pressure actuator are configured to move a transmission pin of the valve to one or more of a first working state, a second working state, a third working state, a fourth working state, a fifth working state, a sixth working state, a seventh working state, and an eighth working state, wherein the pressure actuator is fluidly coupled to a portion of the intake passage between the compressor and the engine via a connecting line, and wherein the transmission pin moves away from the second connection, toward the third connection, as it progresses sequentially through the first through eighth working states.
Dependencies are inferred from the claim text.