Abstract: Disclosed is a technology capable of efficiently supplying a heater core 12 or a heat accumulation system 15 or an internal combustion engine body 1 with cooling water heated by a cooling water heating mechanism 20 by restraining an unnecessary heat radiation from the cooling water in an internal combustion engine including the heat accumulation system.

Abstract: A cooling system and method for an internal combustion engine including a controller for varying the rate of the cooling water. The controller varies the flow rate of cooling water by setting the flow rate of the cooling water to high when the controller determines that a hot water heating control is to be performed. The controller sets the flow rate of the cooling water to low when the controller determines that a heat accumulating control is to be performed; and the controller sets the flow rate of the cooling water to intermediate when the controller determines that a heating mode is to be performed.

Abstract: An engine coolant draining system is provided with a vent module that is shaped to be inserted into the coolant conduit of a marine engine. The vent module comprises an umbrella-shaped valve which operates as an unidirectional valve to allow air to flow into the coolant conduit from the region external to the coolant conduit, but prevents liquid from flowing out of the coolant conduit through the vent module when the pressure within the coolant conduit is greater than atmospheric pressure external to the vent module.

Abstract: Disclosed is a technology capable of efficiently supplying a heater core 12 or a heat accumulation system 15 or an internal combustion engine body 1 with cooling water heated by a cooling water heating mechanism 20 by restraining an unnecessary heat radiation from the cooling water in an internal combustion engine including the heat accumulation system.

Abstract: In a water discharge mode (heat storage mode) for discharging low-temperature cooling water from a heat storage tank to a side of a heater core that heats air using cooling water from an engine as a heating source, a cooling water amount discharged from the heat storage tank is made smaller as a necessary heating capacity for heating air becomes larger. For example, as an amount of air flowing through the heater core becomes larger, the cooling water amount discharged from the heat storage tank becomes smaller. Further, as the temperature of the cooling water flowing into the heater core becomes higher, the cooling water amount discharged from the heat storage tank is increased.

Abstract: According to an internal combustion engine of the invention, release operation of an antitheft device is selected as an event generating by necessity prior to the starting of an engine, and the pre-heat is started based on the generating timing of the selected event. The start timing of the release operation of the antitheft device is high in terms of both necessity as an event generating prior to the starting of the engine and reproducibility of the time length from its start timing to an arbitrary starting timing of the engine. The pre-heat completed state can be secured by starting the pre-heat synchronously with this timing or at a predetermined timing based on the timing, even when the engine is started at an arbitrary timing. Exhaust characteristics and fuel consumption performance can be improved by optimizing the temperature distribution of the engine at starting.

Abstract: A cooling system particularly suited for use in a small watercraft, which supplies coolant to, and evacuates coolant from, an engine of the watercraft. The engine includes an engine body defining at least one water jacket therein. An engine coolant supply passage desirably routes the coolant into thermal communication with a portion of an exhaust system, such as an exhaust manifold, before supplying the coolant to the water jacket of the engine. When the engine is shut off, coolant is permitted to drain from the water jacket through a drain passage. The drain passage is connected to the coolant supply passage at a position upstream from the exhaust system such that coolant draining from the engine travels in a reverse direction through the supply passage and is drained from the watercraft cooling system.

Abstract: An engine system that includes an internal combustion engine and a heat accumulating device also includes a heat accumulator that accumulates heat by storing a heated cooling medium, a heat supplying device that supplies the cooling medium accumulated in the heat accumulating device to the engine, a cooling medium temperature detector that measures the temperature of the cooling medium, and a controller that carries out failure determination of the heat accumulating device according to various techniques.

Abstract: In a heat storage tank, first and second valve bodies are disposed to open and close first and second valve ports, respectively. A density of the first valve body is made larger than that of cooling water, and a density of the second valve body is made smaller than that of cooling water. When the dynamic pressure due to cooling water is applied to the first and second valve bodies, the first and second valve ports are opened by the first and second valve bodies. On the other hand, when the dynamic pressure is not applied to the first and second valve bodies, the first valve body closes the first valve port by the weight of the first valve body, and the second valve body closes the second valve port by the buoyancy.

Abstract: A method of thermal management for a thermal management system in a vehicle includes the steps of selecting a thermal management function. The method also includes the steps of adjusting a temperature within the thermal management system using the thermal management function and using the adjusted temperature within the thermal management system to control a temperature within an occupant compartment of the vehicle.

Abstract: A draining system for a marine propulsion engine is provided in which a manifold is located at a low portion of the cooling system to allow all of the water within the cooling system to drain through a common location, or manifold. A rigid shaft is connected to a valve associated with the manifold and extended upwardly from the manifold to a location proximate the upper portion of the engine so that a marine vessel operator can easily reach the upper end of the shaft and manipulate the shaft to open the valve of the manifold. In this way, the valve can be opened to allow all of the water to drain from the engine without requiring the marine vessel operator to reach toward locations at the bottom portion of the engine.

Abstract: In a heat storage tank, first and second valve bodies are disposed to open and close first and second valve ports, respectively. A density of the first valve body is made larger than that of cooling water, and a density of the second valve body is made smaller than that of cooling water. When the dynamical pressure due to cooling water is applied to the first and second valve bodies, the first and second valve ports are opened by the first and second valve bodies. On the other hand, when the dynamical pressure is not applied to the first and second valve bodies, the first valve body closes the first valve port by the weight of the first valve body, and the second valve body closes the second valve port by the buoyancy.

Abstract: Disclosed is a technology capable of efficiently supplying a heater core 12 or a heat accumulation system 15 or an internal combustion engine body 1 with cooling water heated by a cooling water heating mechanism 20 by restraining an unnecessary heat radiation from the cooling water in an internal combustion engine including the heat accumulation system.

Abstract: A drain system for a marine vessel is provided which includes one or more pressure actuated valves associated with the coolant water drain system. The boat operator is provided with a pressure controller that allows pressure to be introduced into the system for the purpose of actuating the drain valves and, as a result, opening various drain conduits to allow cooling water to drain from the engine cooling system into the bilge or overboard.

Abstract: According to an internal combustion engine of the invention, release operation of an antitheft device is selected as an event generating by necessity prior to the starting of an engine, and the pre-heat is started based on the generating timing of the selected event. The start timing of the release operation of the antitheft device is high in terms of both necessity as an event generating prior to the starting of the engine and reproducibility of the time length from its start timing to an arbitrary starting timing of the engine. The pre-heat completed state can be secured by starting the pre-heat synchronously with this timing or at a predetermined timing based on the timing, even when the engine is started at an arbitrary timing. Exhaust characteristics and fuel consumption performance can be improved by optimizing the temperature distribution of the engine at starting.

Abstract: An electronic control unit (ECU) of an engine system starts a control (preheat) that supplies heat reserving hot water stored in a heat accumulating device to an engine prior to an engine start. The ECU determines a time that continues the preheat on the basis of a cooling water temperature of the engine so as to execute the engine start after a warming-up of the engine is reliably finished. Further, during the execution of the preheat, a lighting lamp is turned on, and that incidence is recognized to a driver. When the preheat is completed, the ECU automatically starts the engine.

Abstract: A cooler for the water circulation system of a combustion engine has a motor driven pump mounted directly on the cooler and connected via a flat surface with a plate provided with a three-way valve. The flat surface has an inlet and outlet connected to the plate.

Abstract: The invention relates to a latent heat storage system for use on the cooling-water circuit of a vehicle combustion engine, whereby a motor-driven rotary pump is secured either at the edge of the storage system housing or inside said housing.

Abstract: A method of operating cooling fluid circuit of an internal combustion engine for an automotive vehicle at cold start of said engine. Said cooling fluid circuit includes pump means, a heat storage and a cabin heating system heat exchanger interconnected between said heat storage and said engine. The method comprises unloading said heat storage to transfer heat thereof to cooling fluid circulating in said cooling fluid circuit and operating said heat exchanger so as to transfer at least some of the heat of the circulating cooling fluid to heating air of said cabin heating system.

Abstract: A radiator includes a core portion, a header tank, a side plate attached to the core portion and a bracket through which the radiator is mounted to a vehicle. The bracket is separately formed from the header tank, and is connected to the side plate through a bolt. As a result, the radiator is readily mounted to a vehicle of a different model by only changing an attachment position of the bracket to the radiator, without modifying the header tank. Further, the bracket includes a coolant receiving portion disposed to face a drain outlet of the header tank with a predetermined gap therebetween. Therefore, coolant discharged from the header tank collides with the coolant receiving portion to reduce its dynamic pressure. As a result, coolant drained from the radiator is restricted from being scattered.