Abstract: A heat engine with external hot source in which the engine has at least one variable volume working chamber for a working gas, and a distribution mechanism that connects this chamber to a cold input from an energy receiving path during an outgoing transfer phase and to a hot output of the energy receiving path during an incoming transfer phase, the energy receiving path being intended to heat the working gas outside the chamber on contact with the external hot source, wherein the distribution mechanism is timed in such a way as to: maintain pressure in the energy receiving path; during stable operation, connect the working chamber with the cold input from the energy receiving path whilst the pressure in the chamber is lower than the pressure in the energy receiving path.

Abstract: A power plant includes a boiler, a stream turbine generator, a post combustion processing system, a feed water regeneration processing system and a heat exchanger. Heat from the heat exchanger is used to regenerate (a) a reagent that absorbs carbon dioxide from flue gas and (b) a water-lean desiccant used to increase plant operating efficiency.

Abstract: The invention concerns an ORC plant (Organic Rankine Cycle) for a conversion of thermal energy into electric energy, that comprises a heat exchange group for the exchange of heat between the thermal carrier fluid and a working fluid destined to feed at least one expander connected to an electric generator. The heat exchanger group comprises in succession at least one primary heater and a primary evaporator respectively for preheating and evaporation of the working fluid.

Abstract: In a hydraulic variable valve timing mechanism including a lock pin that locks a vane rotor and a housing against relative rotation in the most retarding phase, a specified angle ? is set so that release of the lock pin is started at a time when positive cam torque acts on the vane rotor. When the crank angle reaches the specified angle ?, supply of hydraulic pressure to the advancing oil chamber is started to release the lock pin from the engagement with the lock hole, thereby enabling a reliable release of the lock pin prior to start of change of valve timing.

Abstract: The disclosure relates to a method to produce electricity in a cement clinker production utilizing a kiln and/or a precalciner as combustion chambers to generate electricity, the method including: a. supplying fuel to the precalciner and/or the kiln in a quantity corresponding to at least 110% of a heat value requirement for clinker production operation of the precalciner and/or the rotary kiln per unit weight of clinker, respectively; b. bypassing a portion of hot flue gases from at least one of (i) the kiln and/or (ii) the precalciner; c. leading hot flue gases to a heat recovery steam generator producing steam; d. producing electricity with a power island including a steam turbine equipped with an electrical generator.

Abstract: A camshaft adjusting device (1) for varying the relative angular position of a camshaft in relation to a crankshaft of an internal combustion engine, wherein the camshaft adjusting device (1) includes an actuator (2) for actuating a hydraulic valve, wherein the actuator (2) is fastened to a housing element (4) by a fastening element (3), and wherein the actuator (2) has an axis (5) which in the mounted state of the actuator (2) is concentric to an axis of the camshaft adjusting device (1). In order to simplify mounting of the actuator on the camshaft adjusting device, on the outer face (6) facing away from the camshaft adjusting device (1) the actuator (2) includes a grip section (7) having a configuration that is not rotationally symmetrical to the axis (5).

Abstract: A directional valve (30) for controlling a hydraulic oil flow from a pressure port (34) via working chambers of a camshaft adjuster (4) to a tank port (58). The directional valve (30) includes an accumulator port (36) for conducting at least a part of the hydraulic oil flowing out of a working chamber into a volume accumulator (54) before said hydraulic oil flows out into the tank port (58), and the accumulator port (36) is connected via a passage (60) to the pressure port (34).

Abstract: A device (11) for variably adjusting the control times of gas exchange valves (9, 10) of an internal combustion engine (1), including a drive element (13) that can be brought into driven connection with a crankshaft (2) of the internal combustion engine (1), an output element (14) which can be brought into driving connection with a camshaft (6, 7) of the internal combustion engine (1) and which is arranged in a pivotable manner with respect to the drive element (13), and at least one lateral cover (15) which lies on an axial lateral surface of the output element (14) or of the drive element (13), which is connected to the drive element (13) or to the output element (14) in a rotationally fixed manner and which has a disk-shaped portion (33).

Abstract: A valve timing controller includes a reed valve interposed between an end surface of a vane rotor and an end surface of a driven shaft. The reed valve has a fixed part, a first reed part and a second reed part. Each of the first reed part and the second reed part has each lower limit pressure for allowing working oil to flow from a first supply passage to a second supply passage. The lower limit pressure of the first reed part is different from the lower limit pressure of the second reed part.

Abstract: A valve timing control device for an internal combustion engine. The valve timing control device includes a rotor connected to a camshaft and having a plurality of vanes. A stator is engaged with the rotor, and includes a plurality of webs. Pressure chambers are provided between each of the webs and vanes. A centering slot is provided on the stator and/or the rotor. A pressure medium control valve is disposed in one of the vanes of the rotor, and is configured to not only selectively lock and unlock the position of the rotor relative to the stator, but is also configured such that pressure medium in the pressure chambers is veritable through the centering slot and thereafter through the pressure medium control valve.

Abstract: In a valve drive train device of an internal combustion engine, comprising a phase adjustment device for the adjustment of a phase position between a primary cam and a secondary cam which belong to a same category and which are arranged coaxial with one another, at least one is assigned to a pair of cams for executing a valve lift changeover so as to allow the valve drive train device to be instantly adjusted to a momentary operating situation.

Abstract: A variable valve operating apparatus for an internal combustion engine is provided which includes a helical wall part provided in a guide rail for changing valve opening characteristics of a valve and a projection part, and can secure a contact area between the two when the two are engaged, thus successfully reducing the contact pressure generated between the two. The placement of the projection part with respect to the helical wall part is determined such that the central axis line of the projection part and the central axis line of a camshaft perpendicularly intersect with each other in a state in which the projection part is protruded toward the guide rail by an actuator.

Abstract: A device for varying the angular position of a camshaft relative to a crankshaft of an internal combustion engine. The device has a drive element, which is driven by the crankshaft via a gearwheel and which is supported so that it can rotate in relation to the camshaft. The device also has at least two hydraulic chambers, to which a hydraulic fluid can be admitted in order to set a defined relative rotational position between the drive element and the camshaft, formed between the drive element and the camshaft. In order to produce an optimum axial support of the camshaft in terms of weight and cost, the gearwheel form a bearing face for the axial contact of the camshaft or of a component rotationally fixed to the latter.

Abstract: Contemplated power plants and LNG regasification facilities employ a combination of ambient air and non-ambient air as continuous heat sources to regasify LNG and to optimize power production. Most preferably, contemplated plants and methods are operable without the need for supplemental heat sources under varying temperature conditions.

Abstract: An internal combustion engine includes a cylinder block defining a lifter bore, and a valve lifter assembly positioned at least partially within the lifter bore and configured to actuate a push rod. The assembly includes a valve lifter and an angular displacement-limiting clip. A cutout is formed on a proximal end of the valve lifter and includes a channel and a taper. The valve lifter is rotatable out of alignment with a cam, and the clip limits angular displacement of the valve lifter via contacting a wall portion of the cylinder block. First and second fillets of the clip are positionable within the cutout, such that the taper provides a clearance for inhibiting impingement of the valve lifter upon the fillets.

Abstract: In a variable valve actuation device for an internal combustion engine, a hollow boss (22b) is fitted around the outer periphery of an outer camshaft (15a) and protrudes from one side of a second cam (22a) located opposite a first cam (20) in the width direction of the second cam over a distance greater than the width of the second cam, in order to suppress misalignment of the boss.

Abstract: A valve train device installed in a cylinder head of an engine and driven by a camshaft including a valve unit having an intake valve and an exhaust valve communicated with a combustion chamber of an engine, each of the intake valve and exhaust valve having a linearly extending stem portion and driven in an extending direction of the stem portion; a valve lifter disposed between one end side of the stem portion located apart from the combustion chamber and the camshaft to transmit power from the camshaft to the valve unit; a lost motion unit that interrupts power transmission from the valve lifter to the valve unit; a first spring urging the valve unit in a direction to close the intake valve or exhaust valve; and a second spring having a diameter lager than that of the first spring and urging the lost motion unit against the valve lifter.

Abstract: Systems and methods for an overhead cam shaft coupled to an inline engine with inner cylinders and outer cylinders are disclosed. In one example approach, an engine bank comprises inner cylinders each having only first and second lift profiles, both being non-zero lift profiles, and outer cylinders each having first, second, and third lift profiles, two being non-zero lift profiles and one being zero lift.

Abstract: A camshaft adjuster (2) having a locking cover (1) formed of sheet metal, wherein the locking cover (1) has a substantially disc-shaped base surface (3) and has a collar (7), which extends in an axial direction (5) and which runs at least partially around the base surface (3), for receiving a spring cover (31). As a result of the production of the locking cover (1) from sheet metal in combination with a turned-up collar (7), the locking cover (1) can be produced simply and cost-effectively and nevertheless offers adequately high strength despite the low material thickness.

Abstract: In a valve timing control apparatus configured to enable rotary motion of a vane rotor relative to a sprocket in a phase-retard direction or in a phase-advance direction by controlling hydraulic-pressure supply-and-exhaust for each of phase-advance hydraulic chambers and hydraulic-pressure supply-and-exhaust for each of phase-retard hydraulic chambers, first and second lock pins are located in a large-diameter rotor portion rather than a small-diameter rotor portion. The rotary motion of the vane rotor relative to the sprocket from an intermediate lock position between a maximum phase-advance position and a maximum phase-retard position is restricted by engagement of the first lock pin with a first lock hole and by engagement of the second lock pin with a second lock hole. The vane rotor is held at the maximum phase-retard position by engagement of the first lock pin with the second lock hole.