Abstract: A valve includes an electromagnetic actuator, which has an armature in an armature space and guided on a valve needle operable by the actuator using the armature. A first and a second stop element that interact with a first and second end face, respectively, of the armature are situated on the valve needle. The armature has a spring receptacle, which is open towards the first end face of the armature, and into which a spring is inserted. The armature has at least one fluid channel, which, during operation, allows fluid to pass through between first and second regions of the armature space at the first and second end faces, respectively, of the armature. The fluid channel incorporates at least part of the spring receptacle. Sections of the fluid channel run radially outwards along a direction oriented from the first to the second end face and coaxial to a longitudinal axis.

Abstract: An injection control device includes: a boost controller charging a boost capacitor by performing a boost switching control of a boost switch, and supplying a boost power from a battery power source; and a boost voltage monitor monitors a boost voltage. The boost controller measures a number of times of when the boost voltage becomes equal to or higher than a predetermined value due to a boost current flowing into the boost capacitor, causing a jump of the boost voltage during a time between a start and stop of boosting, and determines deterioration of the boost capacitor by comparing the measured number of times (i.e., the number of jumps) with a predetermined number of times.

Abstract: Systems and methods for bypassing a compromised engine cylinder via cylinder deactivation are described according to various embodiments herein. A system includes an engine coupled to a controller. The controller includes at least one processor and at least one memory coupled to the at least one processor. The at least one memory stores instructions that, when executed by the at least one processor, cause the controller to: determine that one or more cylinders of a plurality of cylinders of the engine is compromised based on data regarding operation of the engine; and cause the engine to operate in the modified engine operating mode whereby operation of the one or more cylinders that are compromised is modified.

Abstract: A pilot and burner apparatus is provided for use in firefighting training. The apparatus includes a main fuel conduit and a main fuel valve. The apparatus includes a pilot tube and a pilot fuel conduit configured to deliver fuel from the main fuel conduit to the pilot tube. The apparatus includes main and pilot fuel valves to respectively control a flow of fuel in the main and pilot fuel conduits. In a pilot phase, the valves direct fuel to the pilot tube. An ignition component is configured to ignite fuel in the pilot tube to generate a pilot flame. In a burn phase, the pilot flame generates a controllable flame out of a main burner pipe by igniting fuel exiting the main fuel conduit. The controllable flame can be delivered to a training structure for training purposes.

Abstract: In at least some implementations, a method of controlling fuel injection events, includes determining at least one engine operating condition, determining timing of a desired pressure in an engine intake chamber or at the outlet of a fuel injector, and initiating a fuel injection event as a function of the at least one engine operating condition and the desired pressure. The fuel injection event is initiated prior to the desired pressure occurring and wherein the fuel injection event occurs for a duration such that the fuel injection event terminates after the desired pressure occurs.

Abstract: A system and method for an electronic control unit adapter used to supplement existing electronic control units for enhanced or additional IO integration, the electronic control unit adapter designed to be updated easily by the end user in order to add functionality as it is developed thus prolonging the viability of an electronic control unit or vehicle, the electronic control unit adapter usable in conjunction with a vehicle or other vessel using an internal combustion engine or similar technology.

Abstract: A shuttle valve for a control valve coupled to an electronic fuel injector is disclosed. The shuttle valve may include a shuttle valve first end including an armature attachment portion operably coupled to an armature of the control valve and a shuttle valve second end opposite the shuttle valve first end defining a sealing portion of the control valve including an annular sealing surface. A valve guide portion may extend axially along a portion of the shuttle valve between the first and second ends. Furthermore, an engagement surface portion may be defined along the valve guide portion that is slidably engaged with a valve bore. Moreover, the shuttle valve may include a non-engagement surface portion defined along the valve guide portion, wherein the non-engagement surface is a non-continuous surface around a circumference of the valve guide portion and wherein the non-engagement surface is interspersed between portions of the engagement surface.

Abstract: An injection control device includes: a boost controller charging a boost capacitor by performing a boost switching control of a boost switch, and supplying a boost power from a battery power source; and a boost voltage monitor monitors a boost voltage. The boost controller measures a number of times of when the boost voltage becomes equal to or higher than a predetermined value due to a boost current flowing into the boost capacitor, causing a jump of the boost voltage during a time between a start and stop of boosting, and determines deterioration of the boost capacitor by comparing the measured number of times (i.e., the number of jumps) with a predetermined number of times.

Abstract: An electromagnetic fuel injection valve includes a coupling between an armature and the valve member that allows limited relative movement of the valve member and armature in both the opening and closing directions of the valve member. An injector body includes a non-magnetic section to focus magnetic flux and attractive force through the armature and pole. A modular power group reduces the cost of assembly and includes a plastic encapsulated coil that is protected from environmental moisture and corrosion. A valve seat incorporates a valve seal which improves fuel flow past the valve member when the fuel injection valve is in the open position.

Abstract: The invention relates to a device for supplying a gaseous fuel to an engine that comprises a gas accumulator for receiving highly pressurized gaseous fuel, a gas buffer for receiving medium pressurized gaseous fuel, a gas supply device for delivering a gaseous fuel into an engine combustion space, a first gas line that connects the gas accumulator to the gas buffer and whose gas flow can be regulated via a first valve, a second gas line that connects the gas accumulator to the gas buffer and whose gas flow can be regulated via a second valve, and a third gas line that connects the gas buffer to the gas supply device. The device is further characterized in that a compressor is arranged in the second gas line to increase a pressure of a gaseous fuel flowing from the gas accumulator to the gas buffer.

Abstract: Provided is a fuel injection valve capable of stroking a valve body in two stages of large and small strokes and improving responsiveness of a valve opening operation. Therefore, a first mover 201 is attracted to a magnetic core 107. A second mover 202 is formed separately from the first mover 201, and is attracted to the magnetic core 107 on an inner diameter side of the first mover 201. A valve body 101 has a flange portion 101a on an upstream side of the second mover 202. A spacer 213 forms a gap (void g1) in an axial direction between the flange portion 101a and the second mover 202 in a valve closed state.

Abstract: A gas-leak-detection device for detecting a gas leakage from an evaporative emission system includes an electric-wire-connection portion and a passage connection portion that are disposed to overlap with at least one of appearance components in a vehicle when the vehicle is seen in a viewing direction, and are disposed closer to the at least one appearance component than a center plane perpendicular to the viewing direction when the vehicle is in an upright state, the center plane being one of an imaginary-lateral-center plane that is an imaginary vertical plane perpendicular to the left-right direction, an imaginary-longitudinal-center plane that is an imaginary vertical plane including a center in the front-rear direction and being perpendicular to the front-rear direction, or an imaginary-vertical-center plane that is an imaginary horizontal plane including a center in the top-bottom direction and being perpendicular to the top-bottom direction.

Abstract: A gas-leak-detection device for detecting a gas leakage from an evaporative emission system includes an electric-wire-connection portion and a passage connection portion that are disposed to overlap with at least one of appearance components in a vehicle when the vehicle is seen in a viewing direction, and are disposed closer to the at least one appearance component than a center plane perpendicular to the viewing direction when the vehicle is in an upright state, the center plane being one of an imaginary-lateral-center plane that is an imaginary vertical plane perpendicular to the left-right direction, an imaginary-longitudinal-center plane that is an imaginary vertical plane including a center in the front-rear direction and being perpendicular to the front-rear direction, or an imaginary-vertical-center plane that is an imaginary horizontal plane including a center in the top-bottom direction and being perpendicular to the top-bottom direction.

Abstract: There is provided a transformation control device of a transformation chopper circuit that transforms an input by turning on and off a current using a switch and outputs the transformed input. The transformation control device controls at least an ON/OFF state of a main switch by acquiring an output voltage of the transformation chopper circuit in a case where the main switch is in an ON state, the main switch being turned on in a case where energy is accumulated in an inductor.

Abstract: An injection control device includes: an area correction unit that calculates an energization time correction amount when executing a current drive of the fuel injection valve to inject a fuel from the fuel injection valve; an estimation unit that independently calculates an estimated energization time correction amount; a comparison unit that compares the energization time correction amount c with the estimated energization time correction amount; and a first abnormality determination unit that determines that the energization time correction amount is abnormal.

Abstract: A system and method for an electronic control unit adapter used to supplement existing electronic control units for enhanced or additional IO integration, the electronic control unit adapter designed to be updated easily by the end user in order to add functionality as it is developed thus prolonging the viability of an electronic control unit or vehicle, the electronic control unit adapter usable in conjunction with a vehicle or other vessel using an internal combustion engine or similar technology.

Abstract: Provided is a control device for a fuel injection device capable of detecting a variation in valve opening start timing of the fuel injection device and stabilizing a fuel injection quantity. Therefore, the control device for the fuel injection device of the present invention is a control device for a plurality of fuel injection devices each including: a valve body that opens a fuel passage by separating from a valve seat; a movable element that causes an opening/closing operation of the valve body; and a stator that attracts the movable element by a drive current flowing through a coil. This control device includes a control unit that controls the energization time of the drive current by a pulse width of a drive command pulse. The control unit estimates a valve opening start timing having a correlation with a detected valve closing completion timing. Further, the pulse width of the drive command pulse is corrected based on the valve opening start timing.

Abstract: A fuel injection method includes applying a first method current to close a spill valve according to a first method, applying a control valve current to open a control valve, and discontinuing the application of the control valve current to thereby cause the control valve to close. The method also includes applying a second method current to maintain the spill valve closed according to a second method and detecting a timing of a closing of the control valve while applying the second method current according to the second method, the second method being different than the first method.

Abstract: A fuel injection valve configured to inject fuel from an injection hole includes: a coil that is configured to generate a magnetic flux when the coil is energized; a stationary core that forms a portion of a flow passage, which is configured to conduct the fuel to the injection hole, wherein the stationary core is configured to become a passage of the magnetic flux; a movable core that is configured to be attracted toward the stationary core when the movable core becomes a passage of the magnetic flux; a passage forming portion that is placed on a downstream side of the stationary core and forms a portion of the flow passage; and a covering portion that covers a stationary boundary, which is a boundary between the passage forming portion and the stationary core, from a flow passage side of the stationary boundary where the flow passage is located.

Abstract: A method for controlling and/or regulating the operation of an internal combustion engine, wherein the relevant specific relative locations of the intake camshaft with respect to the crankshaft are defined and/or controlled with the aid of regulating control values of the engine control unit, in particular for controlling the intake valves between the control value 1 for late and the control value 0 for early, and wherein a specific regulating control value curve and/or specific regulating control values for controlling the relative position of the intake camshaft is or are stored, at least for a specific control period for implementing the load jump, namely at least between the time of the start of the target load jump to the time of the end of the actual load jump corresponding to the target load jump.

Abstract: Security system for protecting a vehicle electronic system by selectively intervening in the communications path in order to prevent the arrival of malicious messages at ECUs, in particular at the safety critical ECUs. The security system includes a filter which prevents illegal messages sent by any system or device communicating over a vehicle communications bus from reaching their destination. The filter may, at its discretion according to preconfigured rules, send messages as is, block messages, change the content of the messages, request authentication or limit the rate such messages can be delivered, by buffering the messages and sending them only in preconfigured intervals.

Abstract: The invention relates to an air cooling device (1) for a vehicle, notably a motor vehicle, comprising:—at least a reserve (3) of liquid, —a device (5) for nebulizing the liquid, —at least two air outlets (7) for diffusing at least an air flow (F1, F2) intended for the interior of the said vehicle, and—at least two nebulizing ducts (9) respectively intended to have passing through them an air flow (F1) laden with droplets of nebulized liquid, each nebulizing duct (9) being arranged in fluidic communication with the reserve (3) of liquid and with an associated air outlet (7). According to the invention, the air cooling device (1) comprises at least one nebulizing regulating member (19) to regulate the flow rate of the air flow (F1) laden with droplets of nebulized liquid passing along a nebulizing duct (9) and to be diffused through the air outlet (7) associated with this nebulizing duct (9).

Abstract: A pulsed waterjet apparatus comprising a water pump for generating a pressurized waterjet, an ultrasonic signal generator for generating an ultrasonic signal and an ultrasonic nozzle comprising an ultrasonic transducer for converting the ultrasonic signal into vibrations that pulse the pressurized waterjet to generate a pulsed waterjet, an exit orifice through which the pulsed waterjet exits and an inflow inlet axially aligned with the exit orifice.

Abstract: A fluid pump valve assembly includes: a valve body; a fluid inlet and a fluid outlet defined in the valve body; an inlet disk and an outlet disk movably disposed in the valve body; and a valve seat fixed within the valve body and including a disk member including at least one first aperture defined axially through the disk member, and at least one second aperture defined axially through the disk member, the inlet disk and the valve seat forming at least part of an inlet valve and the outlet disk and the valve seat forming at least part of an outlet valve. An inlet chamber is disposed upstream of the inlet valve, a pump chamber is disposed between and in fluid communication with the inlet valve and the outlet valve, and an outlet chamber is disposed downstream of the outlet valve. The inlet chamber surrounds the outlet chamber.

Abstract: A piezo actuator is provided which is capable of continuing a provisional operation at least in a limited movable range without bringing an operation to a complete stop even upon occurrence of dielectric breakage. The piezo actuator includes a plurality of piezo blocks and a driving circuit. The piezo blocks are formed by alternately stacking a piezoelectric ceramic layer and an electrode layer. The driving circuit is connected to the piezo blocks. The piezo blocks are arranged in an extension/contraction direction. The driving circuit includes a power source part to which the piezo blocks are individually connected in parallel, and a plurality of limiting resistors respectively disposed in series to the piezo blocks.

Abstract: An engine and a method of controlling the engine may include an EGR injector provided such that EGR gas sprays that are injected toward a side wall of a combustion chamber reach the side wall of a combustion chamber, simultaneously; an EGR pipe connecting the EGR injector to an exhaust system of the engine and ejecting exhaust gas from the exhaust system; an EGR pump mounted in the EGR pipe and pumping the exhaust gas in the EGR pipe to supply the exhaust gas to the EGR injector; and controller connected to the EGR pump and the EGR injector and configured for controlling the EGR pump and the EGR injector so that the EGR injector injects EGR gas into the combustion chamber.

Abstract: Present embodiments provide an electronic fuel injection throttle body which may be used with a variety of engines of different manufacturers. The throttle body may be used to replace mechanical or hydraulically controlled carburetors with electronic fuel injection. The bores or barrels of the throttle body may comprise one or more stackable fuel injectors. The fuel component cover may include a regulator with a housing for integrally with the fuel component cover or alternatively, a regulator may be located remotely.

Abstract: Method to determine an opening time of an electromagnetic fuel injector; the electromagnetic fuel injector is controlled using a series of progressively increasing energization times of the electromagnetic actuator; for each control of the electromagnetic injector, the presence or the absence of a closing of the injection valve is detected; the opening time is identified, which is equal to an intermediate value between the last energization time of the electromagnetic actuator for which the absence of a closing of the injection valve was determined and the first energization time of the electromagnetic actuator for which the presence of a closing of the injection valve was determined.

Abstract: A control device for a fuel injection valve including a variable lift mechanism of two or more stages is provided. The control device includes an inflection point detection unit for detecting an inflection point from at least one of a drive current when the fuel injection valve is opened or a drive voltage when the fuel injection valve is closed. The control device also includes a drive sensing unit for sensing a drive lift of the fuel injection valve from at least one of an inflection point of a drive current during valve opening operation or a drive voltage during valve closing operation. The control device is configured to limit the command drive lift when the sensed drive lift is different from a command drive lift.

Abstract: Methods and systems are provided for an injector. In one example, the injector comprises at least two passages, wherein outlets of each of the passages are differently shaped than corresponding inlets of the passages. Further, in one or more examples, each of the outlets may be shaped and sized differently with respect to each other.

Abstract: A heat sink (2) for an injection/metering valve (4) has a coolant chamber (8) which is designed for receiving a fluid coolant. The coolant chamber (8) has at least one inlet (14) for supplying the coolant and at least one outlet (16) for removing the coolant. The at least one inlet (14) and/or outlet (16) has a pipe segment (20, 22) which extends with one end into the coolant chamber (8). The coolant-chamber-side end of the pipe segment (20, 22) is bevelled, and therefore the coolant-chamber-side end of the pipe segment (20, 22) is in contact at at least one point along its circumference with a baffle (12) arranged in the coolant chamber (8), and the end of the pipe segment (20, 22) is spaced apart at another point along its circumference from the baffle (12).

Abstract: A reductant dosing unit is disclosed, including a fluid injector having a fluid inlet and a fluid outlet. A flange is disposed proximal to the fluid outlet of the fluid injector and configured to secure to a boss associated with an exhaust path of an internal combustion engine. The flange has a largely flat body portion with a through-bore in fluid communication with the fluid outlet of the fluid injector. The flange further includes an extension which extends from the body portion toward the fluid injector and which is connected to thereto. A thermal isolator is disposed between the fluid outlet of the fluid injector and the flange. The connection between the extension of the flange and the fluid injector includes a hermetic seal, preventing exhaust gases in the exhaust path from passing between the flange extension and the fluid injector. The thermal isolator is only used as a support and thermal isolator.

Abstract: A method is disclosed for controlling an injector of a combustion engine. The injector includes an injection valve housing with an injection valve cavity, a valve needle axially movable within the injection valve cavity, a valve seat on which the valve needle rests in a closed position and from which the valve needle is lifted for an open position, and a spring element configured and arranged to exert a preload force on the valve needle acting to urge the valve needle in the closed position. A calibration value is provided, which is representative for the preload force. A base quantity is provided correlated to the fluid volume to be dispensed by the injector. A set-point opening time length is determined based on the calibration value and the base quantity. The valve needle of the injector is controlled to be in the opening position correlated to the set-point opening time length.

Abstract: A nozzle for atomizing coating materials, in particular coating powder, includes a housing, which has an inlet-side opening and an outlet-side opening, and the openings are connected to each other by a passage channel. The housing has an inner housing part, which defines the passage channel, and an outer housing part, which is designed to detachably connect the nozzle to a coating device. In order to optimize the production process for the nozzle and to reduce costs, the inner housing part and the outer housing part are designed as separate individual pieces.

Abstract: Disclosed is a fuel injection valve comprising: a fuel injection orifice provided in a downstream side of a valve seat which a valve body moves toward and away from; a swirl chamber having a swirl passage formed around the entry opening of the fuel injection orifice; and a transverse passage whose end is opened in an inner circumferential wall of the swirl chamber in order to provide a fuel into the swirl chamber, wherein a center of the entry opening is shifted from a first position where the velocity component in the swirl direction of the fuel can be maximized to a second position where the velocity component in the swirl direction is reduced, and where a velocity component in a center axis direction of the fuel injection orifice is enhanced. Thereby, it is possible to easily adjust a fuel injection amount and a spray angle.

Abstract: A control device of a fuel injection device improves stabilization in an opening operation of a valve element and stabilizes an injection amount. The control device includes a valve element to open a fuel passage by being separated from a valve seat, a movable iron core to perform an opening/closing operation of the valve element, and a fixed iron core to attract the movable iron core when a current flows to a coil. The control device includes a control unit which performs an intermediate energization in which the coil is energized again to attract the movable iron core to the fixed iron core and then the energizing to the coil is blocked and the movable iron core is displaced in a direction away from the fixed core. The control unit controls whether the intermediate energization is performed according to an injection interval of the fuel injection device.

Abstract: When a pressure of fuel is intensified using a pressure intensifier, an electronic control unit is configured to set a target common rail pressure to be higher as a fuel leakage volume that is a volume of fuel leaking from a common rail to a fuel tank becomes larger until a three-way valve is switched from a state in which the pressure intensifier is connected to the common rail to a state in which the pressure intensifier is connected to the fuel tank.

Abstract: A dual fuel engine system, such as for diesel and natural gas operation, includes a control system having an electronic control unit structured to vary a stored control valve for a fuel delivery parameter, responsive to engine power output. The engine power output can be determined by in-cylinder pressure monitoring during a liquid fuel mode. The stored control value can be a dynamically updated value in an engine fueling map.

Abstract: The invention relates to a method and a device for actuating an injection valve, which has a piezo actuator and a nozzle needle, of a fuel injection system of an internal combustion engine, in which method a control unit, in a manner dependent on a setpoint stroke height of the piezo actuator in successive injection cycles, outputs a control signal for changing the actual stroke height of the piezo actuator, characterized in that the control unit changes the setpoint stroke height of the piezo actuator, for compensation of the temperature dependency of the capacitance of the piezo actuator, in a manner dependent on the temperature of said piezo actuator.

Abstract: A subassembly for a high pressure fuel injector control valve includes a control valve member and a sleeve attached to a stem of the control valve member, the sleeve extending along at least a partial axial length of the stem of the control valve member, and wherein a clearance, provided between the sleeve and the control valve member, is in fluid communication with the control chamber such that during use, pressure compensation occurs, as the sleeve is caused to expand and seal against the control valve bore, thereby preventing leakage of fuel within the control valve assembly.

Abstract: A fuel injection control device for an internal combustion engine includes an electronic control unit configured to execute division processing for learning for dividing a requested injection amount into an injection amount of partial lift injection of an in-cylinder injection valve and a port injection amount of injection of a port injection valve, detect, on the basis of at least one of a terminal electric potential of a coil and a current flowing through the coil, an inflection point of a change in induced electromotive force of the coil in time attributable to a decline in a relative speed of a mover with respect to the coil, and correct the energization processing at a time when the partial lift injection is executed based on a timing of the detection of the inflection point.

Abstract: A valve assembly for an injection valve is disclosed, including a valve body with a cavity, a valve needle axially moveable in the cavity, the valve needle being fixedly connected to a retaining element which extends in radial direction and is arranged in an axial region of the valve needle facing away from the fluid outlet portion, and an armature being able to slide on the valve needle and acting on the needle by way of the retaining element. A conical spring is arranged between the retaining element and a top side of the armature facing the retaining element, biasing the armature away from the retaining element.

Abstract: The purpose of the present invention is to provide a fuel injection valve control device with which variability in the injection amount with respect to drive pulse width can be kept to a satisfactory level in each of a plurality of fuel injection devices. The present invention provides a fuel injection valve control device for controlling a plurality of fuel injection devices each equipped with a valve body and a solenoid for opening the valve body, characterized in that the device is configured such that, a prescribed time after voltage has been applied to the solenoid, a holding current is applied, the prescribed time and the holding current being corrected for each of the fuel injection devices, on the basis of the operating characteristics of the fuel injection device.

Abstract: Provided is a fuel injection control device capable of accurately detecting a valve opening delay time of a fuel injection valve, and implementing high-precision minute injection control. A valve opening delay time of a fuel injection valve is estimated on the basis of a plurality of valve closing delay times obtained when the fuel injection valve is operated with injection pulse widths that are different injection pulse widths from each other and with which the fuel injection valve is in an intermediate lift state.

Abstract: Control device of an internal combustion engine, namely, for controlling injectors or gas valves of a fuel supply system of the internal combustion engine, wherein the control device controls each injector for opening the same such that the voltage present at the respective injector changes between different voltage levels in a boost phase of the control as well as in a hold phase of the control, and wherein the control device controls the respective injector in the boost phase such that after reaching a defined boost current level the voltage present at the respective injector changes between a relatively low boost voltage level which is greater than zero volts and a relatively high boost voltage level which is greater than a supply voltage of the control device.

Abstract: An injection device (14), for introducing a reducing agent (11) into an exhaust gas stream (8) of an exhaust system (7) of an internal combustion engine (1), has an exhaust pipe (15) for guiding the exhaust gas stream (8), which has a connecting piece opening (18) in a wall (17). A connecting piece (16) is inserted with an inner end (19) into the connecting piece opening (18) and is provided for connecting an injector (10) at an outer end (20). Simplified assembly is achieved if the connecting piece (16) has, at an inner end (19), a laterally projecting, fully circumferentially extending collar (22). The collar (22) is in contact, on an inner side (23) of the wall (17), with an opening edge (24) enclosing the connecting piece opening (18) and is welded to the wall (17).

Abstract: A ram air turbine actuator release device to release a ram air turbine actuator includes a lock bolt releasably engaged to the ram air turbine actuator, a toggle including a toggle roller to engage the lock bolt, and a toggle pivot to couple the toggle to the ram air turbine actuator, a toggle actuator, including an actuation source, and a stroke amplifier, including a piston coupled to the actuation source, a first hydraulic chamber having a first diameter in fluid communication with the piston, a second hydraulic chamber having a second diameter in fluid communication with the first hydraulic chamber, and a plunger in fluid communication with the second chamber, wherein a diameter ratio between the first hydraulic chamber and the second hydraulic chamber amplifies a displacement of the actuation source to displace the plunger to rotate the toggle to disengage the toggle roller from the lock bolt.

Abstract: An internal combustion engine has an intake channel which opens via a first valve into a crankcase of the engine. The first valve opens at a first frequency (f1). The engine has a second valve, which controls the quantity of fuel supplied into the intake channel. The quantity of fuel is controlled by controlling the time interval during which the second valve is open during each engine cycle (x). A control device is provided to control the quantity of fuel supplied. In a first operating state, the second valve is opened at a second frequency (f2, f3, f4) which is coordinated with the first frequency (f1). In a second operating state, the second valve is opened independently of the first frequency (f1).

Abstract: Provided is a gasket effectively suppressing heat transfer from an exhaust pipe with an injector retention section to a reducing-agent injector. The gasket includes a first plate to contact a retaining wall of the injector retention section, the first plate having a first opening allowing the reducing agent to be injected and a first bolt insert-through hole, a second plate disposed closer to the reducing-agent injector than the first plate, the second plate having a second opening allowing the reducing agent to be injected and a second bolt insert-through hole, and a spacing keeping member that retains a spacing between the first and second plates to form a heat insulation space therebetween. The heat insulation space has a shape allowing at least a part of the heat insulation space to communicate with the outside of the gasket between the first and second plates.

Abstract: A blowby gas treatment device is configured to discharge blowby gas inside an internal combustion engine to an intake passage inside an intake manifold. The blowby gas treatment device includes a blowby gas passage, a flow control valve, a communication hole, and a lid. The blowby gas passage includes an engine gas passage and an intake manifold gas passage. The communication hole is provided in the intake manifold. The communication hole is configured to connect outside of the intake manifold and a part of the intake manifold gas passage on a downstream side of the flow control valve in a gas flow direction. The communication hole opens the intake manifold gas passage to the atmosphere. A lid is configured to open and close the communication hole.