Abstract: The disclosure describes trench-confirmable geothermal reservoirs that can snugly abut trench walls (that may be of virgin, compacted earth) for facilitating heat exchange and flow liquid from one lower end to an opposing top end, and vice versa, depending on desired heat exchange. The direction can be reversed for summer and winter heat/cooling configurations. A series of the reservoirs may be used for appropriate heat transfer. The water volume of the reservoirs is relatively large and slow moving for good earth heat conduction.

Abstract: Methods and systems are provided for reducing turbo lag in a boosted engine. A boost reservoir coupled to the engine may be charged with compressed intake air and/or combusted exhaust gas. The pressurized charge may then be discharged during a tip-in to either the intake or the exhaust manifold.

Abstract: A mechanically controllable valve drive for a reciprocating piston engine configured to adjust a gas exchange valve includes the gas exchange valve, a cam assembly comprising a camshaft and at least one cam for the gas exchange valve, a valve, a valve lift adjustment assembly, a drag lift assembly, and a device. The valve lift adjustment assembly comprises a valve lift adjustment device, and an intermediate lever assembly comprising at least one intermediate lever comprising a working curve comprising curve portions. The valve lift adjustment assembly is configured to shift the valve between a zero lift and a maximum lift. The drag lever assembly is operatively connected to the working curve. The device is configured to provide a valve-lift standstill range so that, in a maximum lift position, the valve is opened for a turning angle ? of the camshaft with a flattened valve lift height.

Abstract: A turbine engine temperature control system configured to limit thermal gradients from being created within an outer casing surrounding a turbine airfoil assembly during shutdown of a gas turbine engine and for preheating an engine during a cold startup is disclosed. By reducing thermal gradients caused by hot air buoyancy within the mid-region cavities in the outer casing, arched and sway-back bending of the outer casing is prevented, thereby reducing the likelihood of blade tip rub, and potential blade damage, during a warm restart. The turbine engine temperature control system may also be used for cold startup conditions to heat engine components such that gaps between turbine airfoil tips and adjacent blade rings can be made larger from thermal expansion, thereby reducing the risk of damage. The turbine engine temperature control system may operate during turning gear system operation after shutdown of the gas turbine engine or during a cold startup.

Abstract: Two sets of assemblies are arranged such that a diesel particulate filter device of an assembly as a first set, a selective catalytic reduction device of the assembly as the first set, a selective catalytic reduction device of an assembly as a second set, and a diesel particulate filter device of the assembly as the second set are located next to each other in this order. Respective first and second connection pipes are routed through a region directly underneath an arrangement region where the two selective catalytic reduction devices and the like are arranged, and connected to the respective diesel particulate filter devices. Thereby, an engine unit and a work vehicle which facilitate connection between an engine and an exhaust gas treatment structure and can reduce a load on the first and second connection pipes due to vibration can be achieved.

Abstract: An exhaust gas purification system which feeds hydrocarbon by a post-injection under preset conditions to an upstream side of an exhaust gas purification device positioned on the exhaust path of an internal combustion engine, restoring the purifying capacity of the device or purifying the exhaust gas of the device. Under hydrocarbon feed conditions, if a combination of the exhaust gas temperature and exhaust gas flowrate or intake flowrate during control is deemed to be in a misfire region in which hydrocarbon which is fed to the exhaust path no longer combusts in the exhaust gas purification unit, the feed of hydrocarbon is stopped. As a result, it is possible to prevent deposit of hydrocarbon on catalysts or other exhaust gas purification units of the device, making it possible to constantly maintain the temperature of the unit in a controllable state.

Abstract: A turbocharger system includes: an engine including a first cylinder head constituting a first bank and a second cylinder head constituting a second bank; a center turbocharger formed between the first bank and the second bank, and connected to exhaust and intake manifolds of the first and second banks; a first turbocharger connected to the other exhaust and intake manifolds of the first bank; and a second turbocharger connected to the other exhaust and intake manifolds of the second bank.

Abstract: An exhaust gas control apparatus (100) of an internal combustion engine (200) of a vehicle, which is provided with: the internal combustion engine which can use fuel containing methane in exhaust gas; an exhaust gas purifying apparatus (300) disposed in an exhaust passage of the internal combustion engine; an EGR passage (400) which can recirculate the exhaust gas to an intake passage of the internal combustion engine, in a HPL path which does not include the exhaust gas purifying apparatus; and an adjusting device (407) which can adjust an exhaust gas recirculation amount in the EGR passage, is provided with: a first specifying device for specifying a methane concentration in the exhaust gas; and a first controlling device for controlling the adjusting device to increase an exhaust gas recirculation amount in the HPL path if the specified methane concentration is greater than or equal to a reference value.

Abstract: A charging device may include an actuating device for actuating a control device. The actuating device may be coupled to the control device via an actuating rod. The actuating rod may be coupled to the control device via a guide piece rotatably mounted at two points in an outer actuator lever.

Abstract: A high efficiency energy conversion system disclosed herein incorporates a piston assembly including a sealed cylinder for storing a working fluid and an energy conversion element attached to the piston assembly. A kinematic mechanism such as a cam lobe or a scotch yoke may be used as the energy conversion element. In one implementation, the kinematic mechanism may be configured to provide rapid piston expansion in a manner so as not to allow the expanding working fluid inside the piston to achieve thermodynamic equilibrium. In an alternate implementation, the kinematic mechanism is further adapted to generate a compression stroke in a manner to provide the working fluid inside the piston to achieve thermodynamic equilibrium conditions throughout the compression stroke.

Abstract: Systems and methods for concentrating and storing solar energy are provided. A solar energy receiver for use with the systems and methods may include a container for holding a solar absorption material, such as a phase change material, and a cooled cover disposed above the container for condensing and collecting vaporized phase change material collected along an underside of the cover.

Abstract: In a first processing chamber, a feedstock may be combined with plasma from three plasma torches to form a first fluid mixture. Each torch may have a working gas including water vapor, oxygen, and carbon dioxide. The first fluid mixture may be cooled and may contact a first heat exchange device. Water in the first heat exchange device may be converted to steam to generate electric power. The output fluid from the first heat exchange device may be separated into one or more components. A syngas may be derived from the one or more components and have a ratio of carbon monoxide to hydrogen of about 1:2. The syngas may be heated in a second processing chamber and then cooled to form a second admixture. The second admixture may contact a second heat exchange device that may make steam to power a second electrical generator.

Abstract: Various systems and methods are described for controlling a diesel aftertreatment system coupled to an exhaust system of an engine which includes a selective catalytic reduction (SCR) catalyst and a diesel particulate filter (PF). In one example, a threshold amount of urea injected to the SCR catalyst is adjusted based on an amount of soot generated by the engine and the total amount of urea injected to the SCR catalyst is limited by the threshold.

Abstract: A centrifugal fan according to a preferred embodiment of the present invention includes an impeller, a motor portion, and a housing. The housing includes an upper plate portion, a lower plate portion, and a side wall portion. The upper plate portion or the lower plate portion includes an air inlet. One of the upper and lower plate portions and the side wall portion together define a single housing component molded by casting. A portion of the one of the upper and lower plate portions which is along a boundary between the side wall portion and the one of the upper and lower plate portions defines an increased thickness portion arranged to have an axial thickness greater than that of a remaining portion of the one of the upper and lower plate portions.

Abstract: A gas flow unit includes a gas flow inlet, a gas flow outlet and a gas flow chamber configured to convey a gas flow from the inlet to the outlet, wherein the gas flow inlet is configured to convey the gas flow in a first direction into the gas flow chamber and wherein the gas flow outlet is configured to convey the gas flow in a second direction from the gas flow chamber, wherein the second direction is angular in relation to the first direction, and wherein the gas flow inlet is an inlet into the gas flow chamber and the gas flow outlet is an outlet from the gas flow chamber. In the first gas flow direction, the gas flow chamber extends beyond a projection of an outer periphery of the gas flow outlet and defines a prolongation configured for conveying a first part of the gas flow such that it enters the gas flow outlet from a different direction than a second part of the gas flow entering the gas flow outlet without passing through the prolongation.

Abstract: A vehicle exhaust system includes a mixer and a doser that sprays a reducing agent into the mixer to be thoroughly mixed with engine exhaust gases prior to introduction of the mixture into a downstream exhaust component. The doser is mounted in a tangential orientation relative to a point defined at an intersection of a doser axis with a theoretical cylinder that surrounds a center axis of the mixer and is defined by a variable radius.

Abstract: A ceiling fan with an oscillating mechanism includes a clutch member for adjusting the angle of oscillation according to a user's need. When the motor is actuated, the rotating torque induced by the motor and the transmission mechanism is less than the rotational resistance of the clutch member such that the motor may drive the fan to oscillate. Further, when the user applies an external rotational force greater than the rotational resistance of the clutch member, the user can swing the fan to any angle as desired without rotating or shifting other members except the fan and the fan suspension tube. In this manner, undesired damage of the mechanism or motor due to inappropriately applied external force can be avoided efficiently.

Abstract: An engine for converting thermal energy to kinetic energy includes a first zone, a second zone, and a movable loop extending between the first zone and the second zone. Containers are attached to the loop such that the loop and the containers are movable conjointly between the first zone and the second zone. Each of the containers is adapted to receive a varying amount of a working fluid therein and is adapted to be in a plurality of states, including a first state, in which it contains a first amount of the working fluid, and a second state, in which it contains a second, larger amount of the working fluid. Each of the containers is caused to be in its first state as it moves through the first zone and in its second state as it moves through the second zone so as to impart motion to the loop.

Abstract: Some on-vehicle devices, such as air dams, air spoilers, and HVAC system baffles, may have movable components that are pulled from one position to another by shrinkage of a linear shape memory alloy (SMA) actuator. Upon an activation signal, the shrinkage of the SMA actuator occurs when it is resistance heated by an electrical current. It is found that useful information concerning the overall intended operation of the on-vehicle device may be obtained by computer analysis of the temporal variation of both current flow through the actuator and its electrical resistance as it is heated to perform its function in the device. A comparison of present current flow and variation of resistance, during activation of the device, with prescribed stored values can reveal malfunction of components of the device as it is being used, in place, on the vehicle.

Abstract: A system and methods for routing condensate collected in a heat exchanger reservoir to either an air intake system or a position in the engine exhaust based on the type of contaminate in the condensate and operating parameters of the engine or the catalyst are described. In one particular example, condensate is routed to a first position along the engine air intake system in a first mode of operation, and a second position upstream of the catalyst along the engine exhaust in a second mode of operation, and a third position downstream of the catalyst along the engine exhaust in a third mode of operation. When substantially no contaminates are detected, the condensate may be routed into the engine exhaust upstream of the catalyst in order to cool the catalyst.