Abstract: When a purge control valve is in a supply state of supplying purge gas from a canister to an intake pipe and a pump is in operation, a concentration detector is configured to detect a concentration of the purge gas when the purge control valve is open in a case where a duty cycle of the purge control valve is not less than a predetermined value, and detect a concentration of the purge gas when the purge control valve is closed in a case where the duty cycle of the purge control valve is less than the predetermined value.

Abstract: A turbocharger (1) with variable turbine geometry (VTG). A multiplicity of guide vanes (7) each have a vane shaft (8) mounted in the vane bearing ring (6). An adjusting ring (5) is operatively connected to the guide vanes (7) by way of associated vane levers (20) which are fastened to the vane shafts (8) at one of their ends. Each vane lever (20) has, at the other end, a lever head (23) which can be placed in engagement with an associated engagement recess (24) of the adjusting ring (5). An actuation device (11) has an inner lever (26) which is arranged in the turbine housing (2) and which is connected by means of an adjustment pin (25) to the adjusting ring (5). The adjustment pin (25) has a welding bolt (27) on which a wear-resistant sleeve (28) is arranged.

Abstract: An engine system comprises a fuel tank, an internal combustion engine, a generator, a recoil starter, a control unit, an injector, a fuel pump, an ignition apparatus, and a detection unit that detects a number-of-rotations of the internal combustion engine. The control unit, in a starting period of the internal combustion engine using the recoil starter, determines whether or not the internal combustion engine can perform self-sustaining rotation based on the number-of-rotations, and if the internal combustion engine cannot perform self-sustaining rotation. Electric power is not supplied to the ignition apparatus, the injector, and the fuel pump when the internal combustion engine cannot perform self-sustaining rotation. The electric power is supplied to them when the internal combustion engine can perform self-sustaining rotation.

Abstract: A port injection valve injects fuel into an intake passage. A base injection amount is an injection amount proportional to an amount of fresh air introduced into a cylinder of an internal combustion engine. A division process involves dividing the base injection amount into a synchronous injection amount and an asynchronous injection amount. In an intake-synchronous injection, the fuel is injected in synchronization with a period in which an intake valve is open. In an intake-asynchronous injection, the fuel is injected at a time advanced with respect to the intake-synchronous injection. In a selective correction process, the asynchronous injection amount is corrected according to a required correction amount for the base injection amount, and the synchronous injection amount is not corrected.

Abstract: Provided is a fuel injection control device capable of improving detection accuracy of a singular point with respect to a characteristic of the fuel injection valve to be equal to or higher than an original time resolution of the A/D conversion, and capable of accurately detecting the singular point. A variable control part 24 variably controls a conversion timing of the A/D conversion part 221 such that the conversion timing of A/D conversion for physical quantity data related to driving of the fuel injection valve 10 is relatively changed, the A/D conversion part 221 acquires a plurality of time series data by performing A/D conversion on the physical quantity data at a conversion timing before change and at a conversion timing after change by the variable control part 24, and a detection part 223 detects a singular point with respect to the characteristic of the fuel injection valve 10 based on the plurality of time series data.

Abstract: An evaporative fuel treating apparatus includes: a canister; a vapor passage configured to cause a fuel tank to communicate with the canister; a closure valve including a valve disc arranged in the vapor passage and a stepping motor configured to open and close the valve disc; and a control device configured to control the closure valve. The control device is configured, in opening the valve disc to perform a pressure relief operation of the fuel tank, to: execute a flow rate estimation processing that calculates an estimated flow rate of gas passing through the closure valve, based on the absolute value of the amount of change of in-tank pressure of the fuel tank and a space volume inside the fuel tank; and execute a motor control processing that controls the number of steps of the stepping motor such that the estimated flow rate approaches a required flow rate.

Abstract: In the preferred embodiments an air flow diverting blade is integral to a base that doubles as a collar designed to co-axially attach to the nozzle tip end of a typical port fuel injector for internal combustion engines. Upon simple manual manipulation of the set rotational angle of the typically externally exposed portion of the port fuel injector along its longitudinal axis, as typical modern port injection systems allow after installation, the angle of the intra-port flow diverting blade can be selectively varied to either straighten existing swirl and increase top end flow, or, introduce lateral directional swirl to whatever angle and intensity in either direction is desired. The functional use of a typical port fuel injector is thereby elevated to a multifunction of tunable fuel and air flow control at the point of induction into a combustion chamber without any modification to existing engine designs or their engine management control systems employed therefore.

Abstract: An engine or engine casing having an inner annular case and an outer annular case. The engine casing is formed using an additive manufacturing technique such that the inner annular case and outer annular case is formed surrounding a hollow inner annular cavity. The annular cavity includes a pin bank connecting the inner annular case and outer annular case. The pin bank improves heat transfer between the inner and outer annular case and provide structural support to the inner and outer annular case. By providing fluid flow through the annular cavity, the turbine casing can be cooled and the radius of the casing can be controlled through the regulation of fluid travelling within the annular cavity. By controlling the fluid flow though the annular cavity, the engine case may be cooled to regulate its temperature in a wide variety of operating conditions.

Abstract: When a fuel tank is inclined at a negative slope and tilted to the right side, it may be tilted such that a position of a mesh member is relatively higher than a position of a vapor outlet of a vapor outlet passage. In this case, air may enter into a leak passage from an outlet port such that interfacial tension is generated in the mesh member. The interface between fuel and air is present at the mesh member, and the interfacial tension generated at the interface serves to prevent air from entering into a discharge pipe.

Abstract: A method for operating a drive device of a motor vehicle, having an internal combustion engine and at least one switchable mechanism. The mechanism can be switched to change an operating state influencing a fuel consumption and switching causes an increased fuel consumption. It is proposed that a torque and a rotational speed of the internal combustion engine are predicted depending on a current operating situation, that a dwell time of the mechanism in a switching state is predicted depending on the torque and the rotational speed, and that the mechanism for changing the operating state is actuated depending on the dwell time.

Abstract: When the internal combustion engine is stopped, a pressure reduction pump performs a pressure reduction while a first open/close valve and a second open/close valve are closed. After that, a control unit determines whether a fault occurs in a second purge pipe between the second open/close valve and an intake pipe based on a measured value obtained by an obtaining portion immediately after the second open/close valve is opened.

Abstract: A method for cleaning a combustion engine using a cleaning apparatus, wherein a cable is coupled to an on-board diagnostic port on the vehicle, and a service hose with a misting nozzle adapter is coupled to a first port on a vehicle. A controller monitors data from the on-board diagnostic port on a vehicle, where the data preferably includes the engine rpm, the catalytic convertor temperature, the engine coolant temperature, the MAF, and the MAP. The controller monitors information from the cleaning apparatus, and the information is processed to adjust the dispensing of the cleaning solution. The adjustment of the cleaning solution can vary the rate, volume, pressure, pulse interval, flow pattern, and duration of the solution in the engine.

Abstract: A wet-gas compressor is described, comprising a compressor casing and a rotor, for rotation in the compressor casing and comprised of at least one impeller. In the compressor casing, a cavity is provided, where liquid contained in a wet gas can collect during operation of the compressor. A drain port is at the bottom of the cavity and a vent port is above the drain port of the cavity. The drain port and vent port are in fluid communication with a liquid-level measuring chamber. A level gauge is provided at the liquid-level measuring chamber and a drainage valve for discharging liquid from the cavity towards a liquid discharge line connected to the drain port. A control arrangement receives a signal from the level gauge and controls the opening of the drainage valve liquid in the liquid-measuring chamber reaches a threshold level.

Abstract: A method for detecting continuous injection during the operation of an internal combustion engine with an injection system having a high-pressure accumulator for a fuel, wherein—a high pressure in the injection system is monitored as a function of time, wherein—in order to detect continuous injection it is checked whether the high pressure has dropped by a predetermined continuous injection differential pressure value within a predetermined continuous injection time interval, wherein—it is checked whether a reduction valve which connects the high-pressure accumulator to a fuel reservoir has been triggered, and wherein—continuous injection is detected if—a reduction valve has not been triggered in a predetermined checking time interval before the dropping of the high pressure, and if—the high pressure has dropped by the predetermined continuous injection differential value amount within the predetermined continuous injection time interval.

Abstract: A vane assembly adapted to be disposed through an annular gas flow path defined between a fan case and an engine core of a gas turbine engine. The assembly comprises a vane having a vane body configured for extending between the engine core and the fan case, a vane head disposed at one end of the vane body, the vane head being adapted to be disposed outside the annular gas flow path, the vane head having an abutting surface configured for contacting an outer surface of the fan case, and a recess extending within the vane head and opening to the abutting surface. The recess is configured for circumferentially surrounding a longitudinal axis of the vane and forming a closed figure. The assembly also comprises a sealing member disposed within the recess.

Abstract: A rotor assembly for a rotary wing aircraft includes a rotor hub having a central axis, the rotor hub rotatable about the central axis. A plurality of flexible structural members extend radially outwardly from the rotor hub, each flexible structural member substantially U-shaped and having a first arm extending from the hub, a second arm extending from the hub, and an end portion connecting the first arm to the second arm at a radially outboard end of the flexible structural member. A clamp member is positioned between the first arm and the second arm of each structural member and secured thereto to tie deflection of the first arm to deflection of the second arm. A rotor blade is secured to each flexible structural member of the plurality of flexible structural members via the clamp member.

Abstract: A control device is for an internal combustion engine including a throttle valve and a variable valve mechanism, and configured to be operated at a prescribed target air-fuel ratio and capable of restarting from an intermittent stop. The control device includes an electronic control unit configured to start the internal combustion engine after starting an intake air amount reduction control, when a fuel injection amount equal to or larger than a prescribed amount is required and an intermittent stop time is equal to or longer than a prescribed time in a case of the restart from the intermittent stop. The intermittent stop time is a stop time from an immediately preceding intermittent stop to a current restart of the internal combustion engine. The intake air amount reduction control is a control of reducing the intake air amount by operating the variable valve mechanism with the throttle valve kept fully closed.

Abstract: Methods and systems are provided for adjusting an amount of water injected upstream of a group of cylinders based on a determined maldistribution of water among cylinders during a water injection event. In one example, a method may include injecting a first amount of water upstream of a first group of cylinders and a different, second amount of water upstream of a second group of cylinders based on operating conditions of the respective cylinder groups. Further, the method may include adjusting water injection and engine operating parameters in response the evaporated and/or condensed portion of water.

Abstract: Methods and systems are provided for operating a split exhaust engine system that provides blowthrough air and exhaust gas recirculation to an intake passage via a first exhaust manifold and exhaust gas to an exhaust passage via a second exhaust manifold. In one example, an amount of opening overlap between a plurality of intake valves and a first set of exhaust valves coupled to the first exhaust manifold may be adjusted responsive to a transition from an estimated combustion air-fuel content to a leaner air-fuel content of the blowthrough air on a cylinder to cylinder basis. As one example, the transition may be determined from an output of an oxygen sensor positioned within the first exhaust manifold or an exhaust runner of each of the first set of exhaust valves.

Abstract: A mounting arrangement for mounting a fluid cooler to an engine case of a gas turbine engine, the mounting arrangement comprises at least one fixture adapted to be mounted to the engine case and defining a circumferentially extending channel for receiving at least one circumferentially extending flange of a cooler body of the fluid cooler. The at least one flange being free to slide in the channel of the at least one fixture in a circumferential direction of the engine case. The fixture may further comprise a clamping arrangement to hold the fluid cooler while allowing the same to thermally grow.