A peripheral wall portion of a piston is provided with a through hole penetrating through the peripheral wall portion. A cylinder is provided with a scavenging passage having a first opening being open in a bore surface and configured to make a bore section and a crank chamber communicate with each other and is provided with a communication passage having a second opening being open in the bore surface on the other side with respect to the first opening and configured to make the bore section and the scavenging passage communicate with each other. The cylinder and piston are configured so that the through hole overlaps the second opening to communicate with the communication passage in a partial interval of a scavenging stroke in which the first opening becomes open in the bore surface on one side of the piston with reciprocal motion of the piston.

A heat management system of a gas turbine engine for cooling oil and heating fuel, includes an oil circuit having parallel connected first and second branches. The first branch includes a fuel/oil heat exchanger and a first fixed restrictor in series and the second branch includes an air cooled oil cooler and a second fixed restrictor. The first and second fixed restrictors limit respective oil flows through the first and second branch differently, in response to viscosity changes of the oil caused by temperature changes of the oil during engine operation to modify oil distribution between the first and second branches.

A heat management system of a gas turbine engine for cooling oil and heating fuel, includes an oil circuit having parallel connected first and second branches. The first branch includes a fuel/oil heat exchanger and a first fixed restrictor in series and the second branch includes an air cooled oil cooler and a second fixed restrictor. The first and second fixed restrictors limit respective oil flows through the first and second branch differently, in response to viscosity changes of the oil caused by temperature changes of the oil during engine operation to modify oil distribution between the first and second branches.

A cooling system of a motor vehicle may include a coolant circuit including an exhaust-gas recirculation path and an exhaust-gas recirculation cooler arranged therein. A pressure detection device may be provided for detecting a coolant pressure in the coolant circuit. An actuating device may be connected communicatively to the pressure deduction device. A valve device may be connected communicatively to the actuating device and configured to control an exhaust-gas stream passing into the cooler. The actuating device may be configured to at least partially close the valve device and reduce the exhaust-gas stream flowing to the cooler in response to the pressure detection device detecting a predefined pressure drop.

Various methods and systems are provided for an intake manifold for an engine. In one example, the intake manifold comprises a first passage for supplying intake air to a plurality of cylinders of the engine and a second passage for supplying gaseous fuel to the plurality of cylinders.

A vehicle cooling device includes: at least one of a radiator and a condenser; a fan cover including a fan configured to cool the at least one of the radiator and the condenser, the radiator, the condenser and the fan cover being positively charged; a connecting part that connects the at least one of the radiator and the condenser and the fan cover with each other; and a self-discharge static eliminator that is installed on a non-conductive wall surface of the connecting part, and is configured to decrease an electric charge amount of a part of the non-conductive wall surface within a limited range, centered on a location where the self-discharge static eliminator is installed, static elimination of the at least one of the radiator and the condenser being performed by the self-discharge static eliminator.

A vehicle cooling device includes: at least one of a radiator and a condenser; a fan cover including a fan configured to cool the at least one of the radiator and the condenser, the radiator, the condenser and the fan cover being positively charged; a connecting part that connects the at least one of the radiator and the condenser and the fan cover with each other; and a self-discharge static eliminator that is installed on a non-conductive wall surface of the connecting part, and is configured to decrease an electric charge amount of a part of the non-conductive wall surface within a limited range, centered on a location where the self-discharge static eliminator is installed, static elimination of the at least one of the radiator and the condenser being performed by the self-discharge static eliminator.

A marine engine quick drain system is provided having multiple drainage tubes connecting each drainage point on the marine engine to a water removal device. The water removal device is operable to drain water from all drain ports within the engine simultaneously, routing all drain ports to single point drain which is preferably connected to vacuum for evacuating fluids from the marine engine. Fittings are provided to connect each drainage tube to each drainage point on the marine engine. Integrated within each fitting is a fluid sensor which indicates the presence of water in each part of the engine. Each sensor is connected back to a central control console having a microprocessor which will control the water removal device and verify that the marine engine has been drained properly or if there is water in the marine engine.

Methods and systems are provided for a phase change material (PCM) integrated radiator. In one example, a method may include adjusting a radiator control valve into a first position to flow coolant only through a first zone of a radiator containing phase change material (PCM) and not through a second zone of the radiator not containing phase change material. The method may further include adjusting the radiator control valve into a second position to flow coolant only through the second zone of the radiator and not the first zone.

A valve includes a housing including a plurality of ports including an inlet port in communication with a radiator. The valve includes a cylinder located in the housing that includes a plurality of apertures and a fail safe opening. The cylinder is moveable such that one of the plurality of apertures can be aligned with one of the plurality of ports of the housing to determine a flow of a fluid through the valve. The valve includes a moveable feature moveable with and relative to the cylinder, and the moveable feature covers the fail safe opening of the cylinder when a temperature of the fluid flowing through the valve is below a threshold temperature.