Abstract:
A cooling system for a water cooled internal combustion engine for a vehicle includes an engine body having a water jacket therein. The system comprises a radiator and a pump chamber. The pump chamber is in communication with the water jacket. A water pump creates a flow of water into the water jacket. A first main conduit has an end connected to the water jacket at the engine outlet and another end connected to the radiator. A second main conduit has an end connected to the radiator and another end connected to the pump chamber. A reservoir tank is arranged at a position more elevated than the radiator, and a supplementation conduit connects a bottom portion of the reservoir tank with an upper part of the pump chamber. A thermostat valve is arranged between the second main conduit and the pump chamber at a position upstream from a location where the supplementation conduit is connected to the pump chamber. A check valve is arranged in parallel with the thermostat valve and allows the introduction of air from the pump chamber to the second main conduit while preventing a flow of the air from the second main conduit to the pump chamber. The check valve is in a normally closed position under the force of gravity and is switchable to an opened position in response to a predetermined amount of air pressure in the pump chamber.
Abstract:
In a closure cap for a container, especially for a vehicle radiator, with an outer part (12), an inner part (16) of cup-shape connected with the outer part and insertable into the opening to be closed, and having an overpressure valve arranged in the inner part for opening and closing a pressure compensation channel running through the inner part (16), which overpressure valve includes an axially movable first valve body (26) which carries a first ring shape substantially radially extending sealing surface (36) biased against a ring-shaped first countersealing surface (48) by a spring urging the first valve body toward the bottom of the inner part (16), the first outwardly directed countersurface (48) is formed by a second valve body (46) movable axially between two end positions, which second valve body has an opening radially inside of the first countersealing surface (48) and radially outside of the first countersealing surface has an inwardly facing second ring-shaped sealing surface (52) and an outwardly facing third ring-shaped sealing surface (58), a respective one of which second and third sealing surfaces in each of the two end positions of the second valve body (46) engages an associated one of second and third countersealing surfaces (54) and (56) provided on the inner part (16).
Abstract:
A venting arrangement for a cooling circuit of an internal combustion engine, having a vent line which connects a radiator to a top section of an expansion tank located at a higher level with regard to the top of the radiator. In order to avoid trapping of air inside the vent line, a vent valve in the form of a flap or diaphragm valve is installed at the highest point of the vent line, via which vent valve the trapped air can escape during travelling operation and during filling. By the arrangement of the vent valve inside the expansion tank, the cooling water expanding during running of the engine and discharging via the vent valve remains in the expansion tank.
Abstract:
A cooling water pickup system is provided for a marine stern drive. The stern drive includes an outdrive housing having a cooling water passage defined therein with first and second cooling water inlet openings defined on opposite sides of the housing and communicated with the passage. An exterior surface of the housing has first and second recesses defined therein by first and second recessed shoulders adjacent the first and second cooling water inlets. First and second inserts are received within the first and second recesses and abut the respective recessed shoulders. Each insert includes a locking member extending inward into the cooling water passage. The locking members of the first and second inserts each include a camming surface and an outwardly facing locking surface located outward of the camming surface. When the first and second inserts are placed in the recesses of the housing and moved toward each other, the first and second camming surfaces engage each other creating transversely directed camming forces. At least one of the locking members is sufficiently resilient to be deflected to allow the locking members to overlap until the first locking surface moves past the second locking surface to lock the inserts in place within the housing.
Abstract:
A system for cooling an internal combustion engine having a turbocharger includes an engine coolant recirculating circuit and a turbocharger coolant recirculating circuit. Coolant is fed from the former recirculating circuit to the latter recirculating circuit. The turbocharger coolant recirculating circuit includes a coolant feeding tank at a higher position than those of the turbocharger and a radiator. Coolant is recirculated from a water jacket for the engine via a coolant intake pipe, a water jacket for the turbocharger, a coolant discharge pipe, the coolnt feeding tank, a coolant return pipe and the pump. Air in the both recirculating circuits is collected in an air venting portion of the radiator and then transferred to an air chamber in the feeding tank via an one-way valve.
Abstract:
A safety device for an engine cooling system having a heater core circuit for circulating the engine cooling water through the heater core of an automotive air conditioning system, and a radiator circuit for circulating the engine cooling water through a radiator. The safety device comprises a safety valve provided in the heater core circuit and capable of discharging the engine cooling water outside the vehicle when the temperature of the engine cooling water exceeds a predetermined temperature and/or when the pressure of the engine cooling water exceeds a predetermined pressure.
Abstract:
A hermetically sealed low pressure, low temperature cooling system for internal combustion engines which include a thermostat that operates at a predetermined temperature, typically 195.degree. F. Thermostatic control of engine operation temperature is maintained at or in relatively close proximity to this predetermined temperature thereby eliminating overheating and corrosive deterioration of the cooling system. Free coolant flow between the radiator and a small expansion reservoir is maintained at all times with the expansion reservoir positioned at the elevation of an outlet near the top of the radiator or slightly above this elevation. The system is provided with a transparent viewing cap for the radiator so that the level of liquid coolant can be observed at all times.
Abstract:
A releasably retainable fresh water flushing adaptor and method of manufacture thereof for outboard and stern-drive marine engines having an external lower propulsion housing which includes at least one fresh water intake port along the bottom forwardly bulbous portion of the lower housing. The flushing adaptor includes a molded cover which is mateably, releasably self-retaining over this forwardly portion of the lower housing and also includes a fitting connected or connectable into the bottom forwardly portion of the cover for releasable attachment to a supply of fresh water. The fitting has an internal passage in alignment and in fluid communication with the housing water intake. A water distribution groove formed into the interior surface of the cover adjacent the fitting for an increased water flow into the water intake is also provided. Releasable strap means either connected to or completely circumscribing lower housing and cover may also be provided to eliminate any tendency for the cover to be forced from disengagement with the lower housing by engine vibration or water pressure.
Abstract:
A volume expansion, venting and reservoir tank for the liquid-cooling system of internal combustion engines with two chambers connected by means of an overflow line, which are formed from plastic molded parts welded together. The overflow line as well as further connections and openings are molded integrally with the molded parts at a filler inlet. The tank is constructed favorable from a manufacturing point of view and is applicable alternatively to different cooling systems for different pressure control possibilities of the two chambers depending on the arrangement of one closure cover or two closure covers with pressure control valves at the two chambers.
Abstract:
A car spoiler having an aerodynamic surface for controlling the airflow around the automotive body is provided with a built-in liquid handling means which is used as a liquid reservoir, heat storage tank, or heat exchanger. The heat storage tank may be used to store the hot coolant of the cooling system of the engine during normal operation and to supply the hot coolant to the cooling system in order to quickly warm up the engine or to the hot-water car heater system in order to heat the passenger compartment during cold start of the engine. The built-in heat exchanger may be used to cool the engine coolant, engine lubricant, or transmission oil of the automatic transmission system.