A piston formed of steel and/or cast iron for a heavy-duty diesel engine which includes an oil belt for controlling an oil film and thus achieving reduced oil consumption and carbon build-up is provided. The piston includes an uppercrown portion presenting a combustion surface, a ring belt depending from the combustion surface, pin bosses depending from the ring belt, and skirt panels depending from the ring belt and located diametrically opposite one another. The ring belt includes two ring grooves preferentially but accommodates a 3 ring groove version for containing piston rings. The oil belt is located axially below a pin bore on the pin bosses. The oil belt also has a convex shape extending continuously around a circumference of the piston.

The invention relates to a method, system, and computer program product for controlling a waste heat recovery system associated with a vehicle powertrain, the powertrain comprising a combustion engine and a gearbox connected to the combustion engine, the waste heat recovery system comprising a working fluid circuit; an evaporator; an expander; a condenser; a reservoir for a working fluid and a pump arranged to pump the working fluid through the circuit, wherein the evaporator is arranged for heat exchange between the working fluid and at least one heat source, wherein the waste heat recovery system further comprises a cooling circuit arranged in connection to the condenser, and wherein the expander is mechanically coupled to the powertrain. The method comprises the steps of determining the pressure and temperature of the working fluid upstream of the expander; and controlling the rotational speed of the expander based on the determined pressure and temperature.

Methods and systems for operating a vehicle that includes an internal combustion engine and a gaseous fuel storage tank are presented. In one example, the gaseous fuel storage tank is cooled so that an amount of gaseous fuel that may be stored in the gaseous fuel tank may be increased to extend a vehicle's driving range.

Methods and systems for operating a vehicle that includes an internal combustion engine and a gaseous fuel storage tank are presented. In one example, the gaseous fuel storage tank is cooled so that an amount of gaseous fuel that may be stored in the gaseous fuel tank may be increased to extend a vehicle's driving range.

The invention provides a single radiator cooling system for use in hybrid electric vehicles, the system comprising a surface in thermal communication with electronics, and subcooled boiling fluid contacting the surface. The invention also provides a single radiator method for simultaneously cooling electronics and an internal combustion engine in a hybrid electric vehicle, the method comprising separating a coolant fluid into a first portion and a second portion; directing the first portion to the electronics and the second portion to the internal combustion engine for a time sufficient to maintain the temperature of the electronics at or below 175 C.; combining the first and second portion to reestablish the coolant fluid; and treating the reestablished coolant fluid to the single radiator for a time sufficient to decrease the temperature of the reestablished coolant fluid to the temperature it had before separation.

A control device is a device for controlling a control angle of a valve which has a minimum value in a change in opening area in accordance with the control angle, and includes a control angle instruction acquisition unit configured to acquire a control angle instruction of the valve, an expansion instruction acquisition unit configured to acquire an expansion instruction indicating whether to expand the opening area, a control angle information acquisition unit configured to acquire control angle information indicating a control angle of the valve, a control angle calculation unit configured to calculate a control angle of the valve on the basis of the control angle instruction acquired by the control angle instruction acquisition unit, the expansion instruction acquired by the expansion instruction acquisition unit, and the control angle information acquired by the control angle information acquisition unit, and a drive control unit configured to output drive information of the valve based on a control angle calculated by the control angle calculation unit.

A control device is a device for controlling a control angle of a valve which has a minimum value in a change in opening area in accordance with the control angle, and includes a control angle instruction acquisition unit configured to acquire a control angle instruction of the valve, an expansion instruction acquisition unit configured to acquire an expansion instruction indicating whether to expand the opening area, a control angle information acquisition unit configured to acquire control angle information indicating a control angle of the valve, a control angle calculation unit configured to calculate a control angle of the valve on the basis of the control angle instruction acquired by the control angle instruction acquisition unit, the expansion instruction acquired by the expansion instruction acquisition unit, and the control angle information acquired by the control angle information acquisition unit, and a drive control unit configured to output drive information of the valve based on a control angle calculated by the control angle calculation unit.

A cooling device for an internal combustion engine including: an ebullient cooling system in which a refrigerant cools the internal combustion engine by boiling in the internal combustion engine, and a rankine cycle system including a superheater that superheats the refrigerant discharged from the internal combustion engine, a turbine to which the refrigerant discharged from the superheat is supplied, and a condenser that condenses the refrigerant discharged from the turbine; wherein the rankine cycle system includes a supply path that supplies a liquid-phase refrigerant discharged from the condenser to a shaft part of the turbine, and a first supply part of the condenser to which the refrigerant discharged from the turbine is supplied is arranged higher than the shaft part of the turbine in a gravity direction.

The invention relates to an environmentally friendly motor vehicle based on the use of energy-accumulating substances (EAS) and can be used not only in transportation engineering, but also in power engineering to produce electric power with the aid of thermal engines run on hydrogen that is produced from aluminum composites in reaction with water. The object of the invention is to provide an environmentally friendly motor vehicle powered by hydrogen that is produced from EAS, comprising a closed water supply system to supply a reactor of a hydrogen generator with water obtained by condensing water vapors from exhaust gases, and quick change cartridges composed of a cylinder casing and a cover with hydrogen-generating elements in the form of plates of aluminum composites mounted inside the casing. The object is attained in the following way. A motor vehicle comprising an internal combustion engine provided with a liquid cooling system with a primary radiator mounted in front of the engine, and a hydrogen generator accommodated in a trunk and operating on the reaction of aluminum composites with water, further comprises an exhaust gas cooling system to autonomously supply the generator with water by condensing water vapors in exhaust gases. The exhaust gas cooling system is connected to an exhaust manifold of the engine and consists of an expander, a condenser in the form of a gas/air heat exchanger and a storage tank for collecting water condensate and discharging uncondensed gases. The storage tank is connected by means of conduits to the hydrogen generator, wherein the supply of water to the latter and circulation of water in order to intensify the hydrogen release process are performed by a pump mounted inside the storage tank, and drainage of water from the generator into the storage tank is performed through a filter mounted in the generator housing.

The invention relates to an environmentally friendly motor vehicle based on the use of energy-accumulating substances (EAS) and can be used not only in transportation engineering, but also in power engineering to produce electric power with the aid of thermal engines run on hydrogen that is produced from aluminum composites in reaction with water. The object of the invention is to provide an environmentally friendly motor vehicle powered by hydrogen that is produced from EAS, comprising a closed water supply system to supply a reactor of a hydrogen generator with water obtained by condensing water vapors from exhaust gases, and quick change cartridges composed of a cylinder casing and a cover with hydrogen-generating elements in the form of plates of aluminum composites mounted inside the casing. The object is attained in the following way. A motor vehicle comprising an internal combustion engine provided with a liquid cooling system with a primary radiator mounted in front of the engine, and a hydrogen generator accommodated in a trunk and operating on the reaction of aluminum composites with water, further comprises an exhaust gas cooling system to autonomously supply the generator with water by condensing water vapors in exhaust gases. The exhaust gas cooling system is connected to an exhaust manifold of the engine and consists of an expander, a condenser in the form of a gas/air heat exchanger and a storage tank for collecting water condensate and discharging uncondensed gases. The storage tank is connected by means of conduits to the hydrogen generator, wherein the supply of water to the latter and circulation of water in order to intensify the hydrogen release process are performed by a pump mounted inside the storage tank, and drainage of water from the generator into the storage tank is performed through a filter mounted in the generator housing.