Abstract: An engine based on a reciprocating piston engine that extracts work from pressurized working fluid. The engine includes a double reed outlet valve for controlling the flow of low-pressure working fluid out of the engine. The double reed provides a stronger force resisting closure of the outlet valve than the force tending to open the outlet valve. The double reed valve enables engine operation at relatively higher torque and lower efficiency at low speed, with lower torque, but higher efficiency at high speed.

Abstract: A bearing arrangement for a camshaft may include a bearing ring arranged between two functional elements. The bearing ring may be supported with respect to the functional elements via axial front sides. At least one of the axial front sides of the bearing ring and a side of the respective functional elements in sliding contact with the axial front side may have a polymer coating.

Abstract: There is described a system and method for controlling a temperature in the subchamber of a rotary engine. At least one first measurement of at least one engine operating parameter and a second measurement indicative of a present temperature in the subchamber are received. A setpoint for the temperature in the subchamber is computed from the at least one first measurement. In response to the second measurement, at least one control signal indicative of a request to adjust the present temperature towards the setpoint is generated and sent to the engine.

Abstract: Pre-chamber system for an internal combustion engine with: -a pre-chamber having a wall, -a spark plug having at least one electrode, -a gas introduction device, particularly a gas valve, -a gas channel connecting the gas introduction device to the pre-chamber via an inlet opening, -a rise channel for connecting the pre-chamber to a combustion chamber of the internal combustion engine, -a guiding device for influencing the flow of the gas in the pre-chamber, said guiding device being arranged adjacent to the inlet opening in such a manner that in operation, a volume flow of hot gas flowing into the pre-chamber via the rise channel and reaching the electrode of the spark plug is reduced by the guiding device.

Abstract: In a method for controlling a valve which injects fuel into a combustion chamber of an engine and which has a valve member which closes a valve opening, and an electric actuator which drives the valve member to carry out strokes for releasing the valve opening and to which electrical control signals are applied for triggering valve member strokes of a defined stroke size, in order to compensate for an age-related stroke reduction of the valve member and deteriorated metering of the injected fuel related thereto, a stroke loss model into which temperature and temperature changes at the valve as well as the number of strokes carried out by the valve member are continuously incorporated is used to predict a reduction of the stroke size as a stroke loss and to correct the control signals using the predicted stroke loss.

Abstract: An injection nozzle for the direct injection of a liquid fuel into a cylinder chamber of a piston engine includes multiple spray holes for generating injection jets. The multiple spray holes are distributed on a nozzle body of the injection nozzle in the peripheral direction. At least one pair of spray holes adjoining in the peripheral direction is provided, the longitudinal center axes of which enclose a pair angle in the peripheral direction that is smaller than an adjacent angle which is enclosed between the longitudinal center axis of the respective spray hole of the spray hole pair in the peripheral direction and a longitudinal center axis of a spray hole adjoining the spray hole pair in the peripheral direction.

Abstract: A fuel injection valve realizing improved circumferential uniformity of swirling fuel is provided. The fuel injection valve includes swirling chambers each having an inner peripheral wall whose curvature is gradually larger from upstream to downstream, paths for swirling each of which, having a fuel flow-in region formed along a valve axis direction, guides fuel to the associated one of the swirling chambers, and fuel injection orifices open into the associated swirling chambers, respectively. In the fuel injection valve, a curved portion is formed on the bottom, in a sectional view along the valve axis direction, of an inlet portion of each of the paths for swirling so as to change the fuel flow in each of the paths for swirling.

Abstract: A fuel injection valve realizing improved circumferential uniformity of swirling fuel is provided. The fuel injection valve includes a swirling chamber having an inner peripheral wall whose curvature is gradually larger from upstream to downstream, a path for swirling which, having a fuel flow-in region formed along a valve axis direction, guides fuel to the swirling chamber, and a fuel injection orifice open into the swirling chamber. In the fuel injection valve, the path for swirling is inclined toward the fuel injection orifice formed on a downstream side of the swirling chamber.

Abstract: A fuel injection valve realizing improved circumferential uniformity of swirling fuel is provided. The fuel injection valve includes swirling chambers each having an inner peripheral wall whose curvature is gradually larger from upstream to downstream, paths for swirling each of which, having a fuel flow-in region formed along a valve axis direction, guides fuel to the associated one of the swirling chambers, and fuel injection orifices open into the associated swirling chambers, respectively. In the fuel injection valve, the paths for swirling are interconnected in a central portion of an orifice plate and are smaller in height toward where they are interconnected.

Abstract: In various embodiments, an engine crankshaft is disclosed. The engine crankshaft comprises a rear bearing journal. The rear bearing journal has an output end. The rear bearing journal defines a substantially cylindrical cavity extending from the output end into the rear bearing journal. The engine crankshaft may further comprise at least one torque sensor operatively coupled to the rear bearing journal. The at least one torque sensor is configured to generate a torque signal corresponding to a torque exerted on the rear bearing journal. The torque exerted on the rear bearing journal is indicative of a torque output of an engine.

Abstract: In controlling valve motions of an internal combustion engine, after determining that engine braking operation has been initiated, a deactivation mechanism disposed within a main valve train is activated thereby disabling conveyance of main valve events from a main valve motion source to a valve via the main valve train. Engine braking valve events are enabled for the valve, which may include two-stroke engine braking. Coupling mechanisms, including one-way coupling mechanisms, between adjacent rocker arms may be used in this manner.

Abstract: A system and method for operating an engine is described. In one example, engine boost pressure is adjusted to improve engine starting.

Abstract: It is intended to provide an exhaust gas purification system for an internal combustion engine, which is capable of suppressing HC emission increase and raising the temperature of an exhaust gas purifier at an early stage while maintaining stable combustion during the warm-up operation such as immediately after the engine starting. The system is provided with: an air flow control unit 50 for reducing a flow rate of air supplied to the engine 1 to raise a temperature of the exhaust gas exhausted from the engine 1; and an activation timing control unit 52 for controlling a timing of activating the air flow control unit 50, and the activation timing control unit is configured to control the timing of activating the air flow control unit 50 so that a combustion state in the engine 1 does not become unstable when the air flow control unit 50 is activated and the air to be supplied to the engine 1 is reduced.

Abstract: A system according to the principles of the present disclosure includes a pump control module and a fuel vaporization module. The pump control module controls a first pump to deliver fuel from a fuel tank to a second pump through a fuel line. The pump control module controls the second pump to pressurize fuel from the fuel line and to deliver the pressurized fuel to a fuel rail. The fuel vaporization module determines whether fuel at an inlet of the second pump is vaporizing based on an engine operating condition. The pump control module increases an output of the first pump when fuel at the inlet of the second pump is vaporizing.

Abstract: A throttle body is provided with an internal fuel reservoir for relieving pressure waves and for assisting hot start conditions of an associated small internal combustion engine employing a low pressure fuel injection system.

Abstract: An engine ignition shutdown module includes a voltage regulator circuit connected to a key switch, and a pair of isolated MOSFET driver circuits connected to the voltage regulator circuit. Each MOSFET driver circuit charges a capacitor while the key switch is in a run position and the interlock switches are closed, and each capacitor discharges through a resistor for a time delay period once the key switch is moved from the run position to an off position or at least one of the interlock switches are opened. A pair of high voltage output MOSFET transistors are switched on while the capacitors discharge and provide an output to a magneto ignition for the time delay period.

Abstract: This disclosure provides system and method that can determine hydraulic start of injection (SOI) in engines using an in-cylinder pressure sensor. The system and method iteratively perform a wavelet transform on a signal based on the pressure information provided by the in-cylinder pressure sensors to determine a detail coefficient corresponding to a frequency band containing frequencies of pressure pulsations excited from a fuel jet injected into the cylinder. Hydraulic SOI is determined at the timing when the amplitude of the determined detail coefficient satisfies a predetermined threshold. The system and method provide diagnostic, control, and/or compensation opportunities for fuel injector operation in high pressure fuel rail engine systems without use of expensive or complex fuel injector components.

Abstract: An engine control system includes a cylinder control module and a pump control module. The cylinder control module selectively deactivates cylinders of an engine. In response to a determination that at least one of the cylinders is deactivated, the pump control module: selectively increases a target displacement for an oil pump that is driven by a balance shaft of the engine; and selectively adjusts displacement of the oil pump based on the target displacement.

Abstract: When fuel is injected into a combustion chamber (2) of a cylinder (13) of an engine (30) of a vehicle (10), the fuel is injected in the form of multiple jets (3) with the aid of an injector (1). In this connection, a first plane is defined in which both the central axis (11) of the injector (1) and the central axis (12) of the cylinder (13) lie. Furthermore, a second plane is defined in which both the central axis (11) of the injector (1) and the surface normal of the first plane lie. The jets (3) are generated in such a way that for each jet pair, which is formed from two of the jets (3), an angle between the projections of the two central axes of the two jets of the jet pair into the second plane is smaller than 50°.

Abstract: The disclosure provides a system and method for detecting inhomogeneous fueling between fuel injectors in an internal combustion engine without resorting to a measurement of the amount of fuel delivered by each fuel injector, permitting rapid and effective adjustment of fueling by any fuel injector deviating from the homogeneity of other fuel injectors in the engine. The benefit of modifying fueling in this manner is that fueling by each fuel injector 38 is balanced independent of actual measurements of fuel delivery, simplifying the process of correcting cylinder-to-cylinder fueling imbalances. The described system and method require no intrusion into a fueling system of the engine and uses currently existing components.

Abstract: A piezo injector includes (a) an actuator chamber in which a piezo actuator is arranged, (b) a control piston bore in which a control piston having a first end side facing the piezo actuator is arranged, wherein a portion of the control piston bore delimited by the first end side forms a first control chamber and an opposing portion of the control piston bore forms a spring chamber, and wherein the control piston is arranged between the first control chamber and the spring chamber, (c) a nozzle needle having a second end side, wherein the nozzle needle guides a nozzle needle sleeve, wherein the nozzle needle sleeve and the second end side delimit a second control chamber, (d) a connecting bore between the first control chamber and second control chamber, and (e) a leakage pin arranged between the piezo actuator and the first end side in a leakage pin bore.

Abstract: A quill connector for a fuel system in an engine includes an elongate quill body defining a fuel conduit having a proximal accumulator segment, and a flow limiter subassembly, for limiting oversupplying of a pressurized fuel, positioned at least partially within the accumulator segment. The subassembly includes a seat component attached to the elongate quill body and supporting a guide component wherein a hydraulically actuated valve and a biaser are disposed. The valve is movable to a closed position during supplying pressurized fuel to a fuel injector, to interrupt a flow of the pressurized fuel thereto.

Abstract: A fuel injection method in an internal combustion engine and an internal combustion engine for performing the fuel injection method. The method includes heating fuel to a temperature between 300° F. and 840° F. (150 and 450° C.); pressurizing the fuel to a pressure exceeding 40 bar; pre-injecting at least 10% of the fuel charge as a pre-injected fuel during the intake stroke; injecting a fuel charge over at least part of the compression stroke into the cylinder; and injecting an ignition-injection of at least 10% of the fuel in a supercritical condition during the compression stroke at a rotational angle between 90° BTDCF and TDCF into the cylinder. The method and related combustion engine create a good mix of premix combustion and diffusion combustion increasing efficiency and consequently reducing emissions to the environment while also keeping noise and vibrations low.

Abstract: A method for controlling injection of fuel upon start-up of a combustion engine including determining a set point quantity of fuel on start up, which is dependent on a difference between a set point acceleration of the engine and an instantaneous acceleration of the engine. An electronic control unit and a motor vehicle can execute the method.

Abstract: A control apparatus that controls a fuel supply system of an internal combustion engine of a vehicle, the fuel supply system including a low-pressure fuel supply mechanism that injects low-pressure fuel into an intake port of the internal combustion engine, and a high-pressure fuel supply mechanism that injects high-pressure fuel into a cylinder of the internal combustion engine, includes a control portion that controls a supply of fuel to the internal combustion engine from the fuel supply system. Immediately after the vehicle stops, when the internal combustion engine satisfies a predetermined condition, the controller idles the internal combustion engine by supplying the high-pressure fuel to the internal combustion engine by the high-pressure fuel supply mechanism, and after stopping the supply of fuel by the high-pressure fuel supply mechanism, idles the internal combustion engine by supplying the low-pressure fuel to the internal combustion engine by the low-pressure fuel supply mechanism.

Abstract: When injecting fuel from a direct injector and a port injector such that a requested fuel injection amount for an internal combustion engine is reached, the direct injector is driven in the following manner. That is, target fuel injection amounts are set on the basis of the engine operating state in order from the fuel injection with the highest priority among fuel injection in a compression stroke, fuel injection in the late stage of an intake stroke, and fuel injection in the early stage of the intake stroke in the direct injector, and the abovementioned setting continues until the total value of the target fuel injection amounts reaches the requested fuel injection amount. Moreover, the direct injector is driven in such a manner that the target fuel injection amounts for each of the abovementioned fuel injections set in this manner are obtained.

Abstract: In one aspect, an engine controller for an engine including multiple working chambers is described. The engine controller includes a mass air charge determining unit that estimates a mass air charge or amount of air to be delivered to a working chamber. Firing decisions made for a firing window of one or more firing opportunities are used to help determine the mass air charge. The engine controller also includes a firing controller, which is arranged to direct firings to deliver a desired output. Fuel is delivered to a working chamber based on the estimated mass air charge.

Abstract: The mechanical lifter generally includes an inner lift member, an outer lift member, and a roller. The inner lift member is at least partly made of a metallic material. The outer lift member is at least partly made of a polymeric material and surrounds the inner lift member. The roller is rotatably coupled with respect to the inner lift member and is partly disposed within the inner lift member. The inner lift member is configured to move a first component in response to a force applied to the roller by a second component.

Abstract: Systems and methods for a multi-path purging ejector are disclosed. In one example approach, a multi-path purge system for an engine comprises an ejector including a restriction, first and second inlets, and an outlet, and a shut-off valve hard-mounted to an intake of the engine and coupled to the outlet.

Abstract: A method may comprise correcting an intake oxygen concentration based on fuel canister vapor purge only during boosted conditions, and adjusting exhaust gas recirculation responsive to the intake oxygen concentration.

Abstract: A powertrain includes a combustion chamber, an intake assembly, an exhaust manifold, and a pump. The combustion chamber is configured for combusting an air and fuel mixture. The intake assembly is configured to supply air to the combustion chamber. The exhaust manifold is configured to draw exhaust gas from the combustion chamber. The pump is operatively disposed between the intake assembly and the exhaust manifold such that the pump is in fluid communication with each of intake assembly and the exhaust manifold. The pump is configured to operate in a first mode to draw exhaust gas from the exhaust manifold and supply the exhaust gas to the intake manifold at a positive EGR flow rate such that exhaust gas is supplied to the combustion chamber.

Abstract: While an EGR valve is closed, a total gas flow rate is computed based on an intake air pressure. An error of the total gas flow rate is learned and corrected. When the EGR valve is opened, the total gas flow rate is computed based on the intake air pressure. An actual EGR-gas flow rate is computed based on the total gas flow rate and a fresh-air flow rate. By using of the EGR valve model, an estimated EGR-gas flow rate is computed based on the fresh-air flow rate and an opening degree of the EGR valve. An error of the estimated EGR-gas flow rate is learned and corrected based on the actual EGR-gas flow rate and the estimated EGR-gas flow rate. Based on a volume fraction of the corrected estimated EGR-gas flow rate and the fresh-air flow rate, an EGR ratio is computed.

Abstract: The invention relates to a module (100) for supplying gas to a motor vehicle, comprising a double dispenser (108), a charge air cooler (107), and an intake box (119) connecting said double dispenser (108) to said cooler (107), the double dispenser (108) comprising a first outlet (136) intended to lead into the intake box (119) and a second outlet intended to lead toward the outside of said module (100).

Abstract: The invention concerns an intake housing 1 for an internal combustion engine, capable of receiving a heat exchanger for exchanging heat between a feed gas stream circulating in the housing and a coolant, wherein said intake housing 1 includes a space 3 for the circulation of the feed gas and a space 2 for receiving the heat exchanger, said receiving space 2 being defined by at least a first metal component 4, 5 including at least one extension 16, 17 that is in one piece with the first metal component 4, 5, said extension 16, 17 at least partially defining the space 3 for the circulation of the feed gas.

Abstract: An engine assembly includes an engine and an intake assembly. The engine defines a combustion chamber and a crankcase, and the intake assembly includes an intake manifold in fluid communication with the combustion chamber. An air-oil separator is provided with the engine and defines a separator volume, an inlet and an outlet, where each of the inlet and outlet are in fluid communication with the separator volume. The inlet of the air-oil separator is provided in fluid communication with the crankcase, and the outlet of the air-oil separator is provided in fluid communication with the intake manifold. The air-oil separator further includes an interior surface that abuts and surrounds the separator volume, and defines a plurality of depressions, and each depression is respectively configured to retain a respective volume of fluid.

Abstract: An engine assembly includes a two-cylinder engine, an intake assembly, and an air-oil separator. The two-cylinder engine defines a first cylinder bore, a first combustion chamber, a second cylinder bore, a second combustion chamber, and a crankcase volume. The engine further includes a first piston disposed within the first cylinder bore, and a second piston disposed within the second cylinder bore. The intake assembly includes an intake manifold in fluid communication with each of the first and second combustion chambers, and the air-oil separator defines a separator volume and in fluid communication with each of the crankcase volume and the intake manifold. A reciprocal, synchronous motion of the first and second pistons is operative to exhale gas from the crankcase volume through the separator volume and into the intake manifold.

Abstract: A fuel control system and method for providing fuel to an internal combustion engine are provided. The fuel control system generally includes at least one valve device structured to deliver a fuel supply to the engine, a first fuel source structured to provide a primary fuel to the valve device, a second fuel source structured to provide an alternate fuel to the valve device, and an electronic controller structured to control the valve device. The electronic controller controls the valve device as a function of various data to selectively deliver the primary fuel and the alternate fuel to generate a fuel supply, e.g. as a mixture of the two fuels. The data used to control the fuel supply may include GPS data, engine data, environmental data, and/or other operational data.

Abstract: A two-stroke engine is provided with a scavenging passage that extends between a scavenging intake that opens into a crankcase and a scavenging port that opens into a cylinder, and an air passage that is connected to an intermediate position of a scavenging passage for introducing air into the scavenging passage. A first check valve that is disposed within a section of a scavenging passage between a scavenging intake and the intermediate position. A second check valve that is disposed within the air passage. The section of the scavenging passage between the intermediate position and the scavenging intake, the air passage, and a mixture gas passage are arranged in a substantially same direction with respect to a longitudinal axis of the cylinder.

Abstract: The elastic shooting support device according to the present invention is made up of at least one spiral elastic element arranged on the body of a shooting support, the elastic element being fixed by one of its ends to said shooting support, while the other end is connected to a string that is brought from an idle position to a stretched position by winding and compressing the spiral elastic element.

Abstract: A device for transferring energy to propel a payload with added velocity after launch includes a first component having a mass (m1), and a second component having a mass (m2). As an assembly, the first and second components are positioned to establish a compression chamber between them that is dimensionally responsive to their relative movements. And, a payload is mounted on a selected component of the assembly. In operation, a driving force is exerted against one component of the assembly to propel the entire assembly along a predetermined flight path. Contemporaneously with this acceleration, the two components are moved toward each other. In turn, this compresses gas in the gas chamber to generate potential energy that is transferred as the gas expands to separate the payload from the assembly with added velocity.

Abstract: A man-powered system for pneumatically launching a pellet cluster includes a cartridge for holding the pellet cluster. A hollow propulsion shaft receives the cartridge for substantially free travel back and forth in the shaft to establish a variable-volume compression chamber in the shaft, between the cartridge and a closed end of the shaft. When a driving force acts to launch the combination of cartridge and shaft, the cartridge moves to compress gas in the compression chamber for a subsequent expansion that will propel the cartridge forward through the shaft. After launch, the compressed gas acts to separate the pellet cluster from the cartridge and to provide a pneumatic assist that increases the velocity of pellets after separation.

Abstract: Device for the artificial aging of stones with at least an aging channel arranged on a support, a vibration device to set the support in motion, and a conveying device to move the stone through the aging channel. The aging channel has at least a first and a second impacting surface, which apply the aging effect to the stone.

Abstract: A grinding wheel machining device includes a movable platform and a grinding wheel machining mechanism. The grinding wheel machining mechanism includes a mounting assembly, a tool holder mounted on the movable member, a machining tool mounted on the tool holder, and an adjusting assembly. The mounting assembly includes a fixing base mounted on the movable platform, a movable member mounted onto the fixing base, and a rotation shaft received into the fixing base and the movable member. The machining tool includes a cutting edge. The adjusting assembly includes a reference member and an adjusting member. The reference member is fixed on the movable member and includes a reference surface. The reference surface is coplanar with a central axis of the rotation shaft. The adjusting member is received into the tool holder and threaded into the reference surface.

Abstract: An oven has an enclosed heat exchange zone for use with biomass fuel. The oven has a body which is able to be placed on the ground. The body has a combustion cabinet and an auxiliary equipment cabinet. The combustion cabinet has a burner received therein. The burner has a fire grate, a side plate, a blowing space, and a hearth. A heat exchange zone is defined by the surrounding tubular inner wall; a side heating zone being defined by a tubular inner and a tubular outer walls. A chimney is formed on the tubular outer wall in communication with an upper portion of the side heating zone. An opening is defined in the top of the combustion cabinet right above the tubular inner wall.

Abstract: An oven appliance is provided. The oven appliance includes a pair of doors and a pair of flanges. Each flange of the pair of flanges is mounted to a respective one of the pair of doors. The flanges engage and overlap each other when the pair of doors is in a closed position and include features for limiting wear between the flanges.

Abstract: An oven appliance is provided. The oven appliance includes a pair of doors. Each door of the pair of doors includes an outer door panel and an inner door panel. The outer and inner door panels are spaced apart from each other along at least one edge of the door such that the inner and outer door panels define a thermal break therebetween. The thermal break can assist with limiting or hindering heat transfer between the inner and outer door panels.

Abstract: A barbecue grill and a burner assembly are disclosed, the burner assembly having a venturi tube for conveying gas to the burner, a burner tube having front and back manifolds, with the venturi tube connected to the front and back manifolds and having flow restrictors at the connection interface to at least partially inhibit entry of gas into the front manifold.

Abstract: There is provided a heating device based on an exothermic reaction between first and second substances. The device comprises a first cavity holding the first substance, a second cavity holding the second substance, and a first barrier layer therebetween. The device further comprises a rotatable breaking element for rotating to breach the first barrier layer, thereby allowing mixing of the first and second substances to start the reaction.

Abstract: The invention relates to a water drawer (1), comprising a housing element (2) and a drawer element (3), wherein the drawer element (3) is movably guided within the housing element (2) and wherein water can be filled into a water receiving space of the drawer element (3), wherein the drawer element (3) can be moved in a translational movement between a first inner position (IN) and a second outer position (OUT), characterized in that the water drawer (1) further comprises at least one driving element (16) for providing a driving force for driving the drawer element (3) to move into the second outer position (OUT).

Abstract: Gas burner assembly, gas cooking hob and gas burner appliance The invention in particular is directed to a gas burner assembly (3). It is proposed that the gas burner assembly (3) comprises a cookware support (4), and further a burner crown (5) and burner cap (6) which are attached to the cookware support (4).