34 results about "Post injection" patented technology

A valve body of the electronic unit pump is provided with a first drainage channel and a second drainage channel which are communicated with a main oil channel, and a first electromagnetic valve used for controlling the first drainage channel to be connected and disconnected and a second electromagnetic valve used for controlling the second drainage channel to be connected and disconnected are installed on the valve body. The second electromagnetic valve is closed in a power-off state, and the second drainage channel is disconnected; and when the fuel pressure is higher than the set value, the second electromagnetic valve is opened in the power-off state, the second drainage channel is communicated for drainage, the second electromagnetic valve is closed in the power-on state, and the second drainage channel is disconnected. By controlling the opening and closing moments of the first electromagnetic valve and the second electromagnetic valve, the three-section fuel injection requirement of the engine in the diesel engine state of'pilot injection, main injection and post injection 'can be met, the fuel supply requirement of the micro-injection gas engine can also be met, and the engine can be restored to the full-power diesel engine state to operate after gas fuel is used up.

A method (10) for estimating the volume (V) of a tank (2) to be filled from a pressurized fluid distribution station (5), such as gaseous hydrogen, the method (10) comprising the following steps: - a step (S1) of injecting a pressurized fluid stream into the tank (2), - a step (S2) of determining a pressure variation (dp) in the tank (2) after the injection of the fluid stream, the pressure variation being determined relative to an initial pressure ( of the tank (2) before the injection, - a step (S3) of determining a quantity (dm) of the fluid stream injected into the tank (2), - a step (S4) of estimating the volume (V) of the tank (2) to be filled as a function of the quantity (dm) of the fluid stream injected into the tank (2) and as a function of the pressure variation (dp) in the tank (2) after the injection of the fluid stream.characterized in that the volume (V) of the reservoir (2) to be filled is also estimated as a function of an injection temperature ( ), i.e., a temperature of the fluid flow entering the reservoir (2), and as a function of a temperature change (dT) in the reservoir (2) after the injection of the fluid flow, the temperature change being determined relative to an initial temperature ( ) of the reservoir (2) before the injection. Figure of the abstract: Figure 2,

The invention discloses an electronic unit pump and an oil supply control method thereof.The electronic unit pump comprises a pump body, a valve body, a push rod and the like, a roller is installed on the push rod and controlled by an oil pumping cam, and the valve body is at least provided with a first drainage channel and a second drainage channel which are communicated with a main oil channel; the valve body is at least provided with a first electromagnetic valve used for controlling the first drainage channel to be connected and disconnected and a second electromagnetic valve used for controlling the second drainage channel to be connected and disconnected. By controlling the opening and closing moments of the first electromagnetic valve and the second electromagnetic valve, the three-section fuel injection requirement of the engine in the diesel engine state of'pilot injection, main injection and post injection 'can be met, the fuel supply requirement of the micro-injection gas engine can also be met, and the engine can be restored to the full-power diesel engine state to operate after gas fuel is used up.

Injection systems for drug delivery are disclosed. A system may include a container filled or fillable with a drug, a stopper movably disposed in the container, a plunger, an energy source outputting a force, a mechanical linkage operable to transmit the force output by the energy source to the plunger to cause the plunger to act on the stopper to expel the drug from the container, and a trigger member. The system may have pre-injection state where the trigger member inhibits actuation of the mechanical linkage, an injection state where the trigger member permits actuation of the mechanical linkage, and a post-injection state where the plunger is stationarily positioned in an end-of-dose position. The system may be designed to limit the number of components included in various force transmission loops present in the pre-injection, injection, and / or post-injection states.

The invention relates to CBCT integrated equipment carrying an injection pump and an application method and application device of the CBCT integrated equipment. According to the method, a bed body, a ray generating device, a detector, an injection pump and an infusion tube are included, and a tube groove is formed in a non-imaging area of a bed board so as to fix the infusion tube, avoid the winding phenomenon of the infusion tube, guarantee normal infusion and further reduce image artifacts; the mechanical driving device can drive the pump body to rotate under the condition that medicine needs to be injected, so that a needle head part of the pump body points to the position lower than the horizontal plane, and outflow of the medicine to be injected is guaranteed; the mechanical driving device can drive the pump body to rotate under the condition that medicine does not need to be injected, so that the needle head part of the pump body points to the position higher than the horizontal plane, and the medicine to be injected is prevented from flowing out of the pump body. Furthermore, the CBCT integrated equipment carrying the injection pump can directly carry out image exposure after injection so as to timely and accurately capture three-stage contrast images and obtain high-quality images.

The invention discloses a high-speed diesel engine quasi-dimensional combustion model parameter matching method, and belongs to the technical field of internal combustion engines. The method comprises the steps that S1, whether an obvious after-combustion phenomenon caused by abnormal fuel injection exists in the diesel engine testing process or not is judged; if yes, entering the next step, otherwise, ending matching; s2, an in-cylinder combustion model is constructed, in-cylinder process checking and complete machine parameter checking are carried out, if the heat release rate and the exhaust temperatures before and after a turbine are abnormal, the next step is carried out, and otherwise, matching is ended; s3, the oil injection mode is changed from pre-injection and main injection into main injection and post injection, and main injection parameters and post injection parameters are determined; s4, simulation data are obtained; s5, comparing the simulation data with the test data; and when the comparison result meets the requirement, construction of the in-cylinder combustion model based on after-combustion is completed, otherwise, the main injection and after-injection parameters are adjusted again, and the step S4 is executed. According to the method, accurate simulation of the combustion process in the presence of after-combustion can be realized through the quasi-dimensional combustion model.

The invention relates to an injection pen. The injection pen comprises a shell, a knob, a connecting pipe sleeve, a first elastic piece, a push rod, a retaining assembly and a medicine bin, the knob is rotatably connected to the shell; the connecting pipe sleeve is positioned between the shell and the push rod; the push rod is connected with the retaining assembly; the first elastic piece is connected to the connecting pipe sleeve; a tooth structure is arranged on the inner wall of the shell; a connecting part and a side arm are respectively arranged at two opposite ends of the connecting pipe sleeve; in a dose setting stage, the knob is connected with the connecting part to drive the connecting pipe sleeve to rotate synchronously, so that the first elastic piece rotates to store energy; the side arm is kept in contact with the tooth structure so as to prevent the first elastic piece from releasing energy; after injection is triggered, the connecting part is separated from the rotary knob, the side arm is separated from the tooth structure, and the connecting pipe sleeve moves to the position connected with the maintaining assembly, so that energy of the first elastic piece is released, and medicine in the medicine bin is pushed. The injection pen is compact in overall structure, and the reliability of the injection pen can be improved.

A supplementary device is configured to be releasably attached to an auto injector type device. The supplementary device is suitable for use with disposable one-shot auto injectors and re-usable one-shot auto injectors. The supplementary device has at least one inductive proximity sensor which outputs signals indicative of the position moveable components within the auto injector. The supplementary device is configured to determine based on the outputted signals the moment at which the auto injector changes from a pre-ejection state to a post-ejection state. In response to determining that the auto injector has changed from the pre-ejection state to the post ejection state, the supplementary device displays a visual indication that a user should hold the auto injector in its current position for a predetermined period of time.

A method carried out by processing circuitry (e.g., a control unit of, or coupled to, a vehicle), for estimating an amount of fuel injected by a fuel injector of an internal combustion engine. The processing circuitry being coupled to one or more pressure sensors configured to output a rail pressure of a fuel rail supplying, in use, fuel to the fuel injector. The fuel injector is configured to inject fuel in response to receiving each of one or more drive pulses (e.g., from the processing circuitry), the drive pulses being of predetermined duration. The method comprises receiving a plurality of pre-injection rail pressure values and a plurality of post-injection rail pressure values, corresponding, respectively, to rail pressure values prior to and after a drive pulse. Then, by extrapolation from the pre-injection rail pressure values, an upper rail pressure value corresponding to an index value at a predetermined timepoint within the drive pulse is determined. Similarly, by extrapolation from the post-injection rail pressure values, a lower rail pressure value corresponding to the index value at the predetermined timepoint is determined. The upper and lower rail pressure values are preferably obtained by estimating pre-injection and post-injection regression lines based on the rail pressure values by least squares method; and the pressure drop is preferably obtained by determining the difference between the upper and lower rail pressure values at the centre of the drive pulse. The amount of fuel injected by the fuel injector is then derived from the determined pressure drop. A control unit and a vehicle incorporating it are also disclosed.

The invention relates to the technical field of pen type injection devices, in particular to an allowance monitoring and locking structure and an injection device. Comprising a shell, a push rod, a clutch, a driving rod, a limiting ring, a termination ring and a dose setting ring, the limiting ring is fixedly connected into the shell, the clutch is sleeved with the limiting ring, the termination ring is arranged at the end, away from the limiting ring, of the clutch, the driving rod is arranged in the shell, one end of the driving rod extends out of the shell, and the push rod is arranged in the driving rod; the push rod extending out of the driving rod sequentially penetrates through the terminating ring, the clutch and the limiting ring; the dose setting ring sleeves the end part of the shell, and the dose setting ring is meshed with the driving rod; the termination ring reciprocates in the axial direction of the push rod and is used for monitoring the residual amount of the injection liquid medicine; the termination ring is provided with a push rod termination surface, the push rod is provided with an injection termination surface, and when the push rod termination surface is in contact with the injection termination surface, injection locking is performed; the locking function after injection is achieved, and the allowance monitoring function is achieved.

The utility model discloses an injection pen with an injection part pressing structure, and relates to the technical field of injection pens. The injection pen comprises an injection pen main body, a pressing assembly and an adjusting assembly, the pressing assembly comprises a connecting sleeve, a central sleeve is installed outside the connecting sleeve, an inner sleeve is rotationally connected to the outer portion of the central sleeve in a sleeving mode, a sliding sleeve is movably connected to the outer portion of the central sleeve in a sleeving mode, a clamping ring is fixedly connected to the end, located in the inner sleeve, of the sliding sleeve, and a pressing spring is movably connected to the outer portion of the central sleeve in a sleeving mode. Pressing seats are mounted at the other ends of the sliding sleeves; the pressing seat comprises a mounting ring, a pressing plate is fixedly connected to one end of the mounting ring, a baffle ring is fixedly connected to the interior of the pressing plate, a band-aid is placed in the pressing plate, and a pushing block is movably sleeved with the sliding sleeve. The pressing plate is pushed by the pressing spring to apply pressure to the skin of a patient, the pain of the patient can be reduced, the adhesive bandage is pushed out through the pushing block to be attached to the skin of the patient, and wound infection after injection of the patient can be avoided.

This suppresses both the occurrence of torque shock and the increase in NOx emissions when switching between stoichiometric and lean combustion. [Solution] The processing circuit 22 of the electronic control unit 21 that controls the hydrogen engine 10 is configured to inject the amount of fuel necessary to generate engine torque according to the required torque as the main injection during the air amount adjustment period for switching between stoichiometric combustion and lean combustion, and to inject the amount of fuel as the post injection such that the total injection amount of the main injection and the post injection is the amount obtained by dividing the actual air amount by the stoichiometric air-fuel ratio.

An apparatus of controlling an engine includes a controller determining an inflow fuel amount adsorbed on an inner wall of a cylinder, and introduced into an oil pan based on the density of a combustion chamber and a post injection fuel amount, determining a vaporization fuel amount vaporized in the inflow fuel amount based on an operating condition of an engine, determining a consumption fuel amount consumed in the vaporization fuel amount based on the operating condition of the engine, and determining a dilution rate of the engine oil based on the inflow fuel amount, the vaporization fuel amount, and the consumption fuel amount; and a display providing an alarm to a driver when the dilution rate of the engine oil is equal to or more than a reference value.

The utility model relates to an injection pen. The injection pen comprises a shell, a knob, a connecting pipe sleeve, a first elastic piece, a push rod, a retaining assembly and a medicine bin, the knob is rotatably connected to the shell; the connecting pipe sleeve is positioned between the shell and the push rod; the push rod is connected with the retaining assembly; the first elastic piece is connected to the connecting pipe sleeve; a tooth structure is arranged on the inner wall of the shell; a connecting part and a side arm are respectively arranged at two opposite ends of the connecting pipe sleeve; in a dose setting stage, the knob is connected with the connecting part to drive the connecting pipe sleeve to rotate synchronously, so that the first elastic piece rotates to store energy; the side arm is kept in contact with the tooth structure so as to prevent the first elastic piece from releasing energy; after injection is triggered, the connecting part is separated from the rotary knob, the side arm is separated from the tooth structure, and the connecting pipe sleeve moves to the position connected with the maintaining assembly, so that energy of the first elastic piece is released, and medicine in the medicine bin is pushed. The injection pen is compact in overall structure, and the reliability of the injection pen can be improved.

Systems, methods, and apparatuses are disclosed that determine a post injection fueling condition in response to one or more engine operating parameters. In response to the post injection fueling condition being present, one of a transient response mode or a thermal management mode is selected in order to determine a post injection fueling amount from a transient response fueling table or a thermal management fueling table. The transient response mode is selected in response to the lambda amount being less than a lambda threshold, and the thermal management mode is selected in response to the lambda amount being less than the lambda threshold and an aftertreatment temperature being less than a temperature threshold.

An apparatus of controlling an engine includes a controller determining an inflow fuel amount adsorbed on an inner wall of a cylinder, and introduced into an oil pan based on the density of a combustion chamber and a post injection fuel amount, determining a vaporization fuel amount vaporized in the inflow fuel amount based on an operating condition of an engine, determining a consumption fuel amount consumed in the vaporization fuel amount based on the operating condition of the engine, and determining a dilution rate of the engine oil based on the inflow fuel amount, the vaporization fuel amount, and the consumption fuel amount; and a display providing an alarm to a driver when the dilution rate of the engine oil is equal to or more than a reference value.

To suppress the occurrence of preignition in an internal combustion engine using hydrogen as fuel.SOLUTION: A control device 100 controls a fuel injection amount of an in-cylinder injection valve 35 arranged at an internal combustion engine 1 which uses hydrogen as fuel. When setting a quantity of a fuel gas which flows back to the in-cylinder injection valve 35 by the occurrence of preignition as a reverse flow rate, and setting one combustion cycle with a cylinder in which fuel injection is performed succeeding to a cylinder in which the preignition occurs as a starting point as a succeeding cycle, when the reverse flow rate is low, the control device 100 performs processing for reducing the fuel injection amount at the succeeding cycle compared with the case that the reverse flow rate is high.SELECTED DRAWING: Figure 1

To prevent two injectors from becoming open simultaneously during post injection, in a multi-cylinder compression ignition type internal combustion engine.SOLUTION: An engine has four cylinders, and an ignition order is #1→#3→#4→#2. An engine ECU performs multi-stage post-injection, which injects fuel in an expansion stroke during DPF regeneration control. The engine ECU sets post-injection timing so that an exhaust temperature of the engine does not exceed a predetermined temperature. When the post-injection timing overlaps with pilot injection of the next cylinder (#3), the multi-stage post-injection timing overlapping with the pilot injection is retarded to after main injection of the next cylinder (#3) (Fig.3(A)). When the post-injection timing overlaps with the pilot injection of the next cylinder (#3), the timing of all multi-stage post-injections may be retarded to after the main injection of the next cylinder (#3) (Fig.3(B)).SELECTED DRAWING: Figure 3

Systems, methods, and apparatuses are disclosed that determine, while the engine is operating with base fuel amount at an air-fuel ratio at or above an air-fuel ratio minimum limit, a post injection condition in response to one or more engine operating parameters. In response to the post injection condition being present, a main injection fuel amount and a post injection fuel amount for combustion in the one or more combustion chambers are determined that, when combined, is at or above the air-to-fuel ratio minimum limit. A main spark timing and, if needed, a post spark timing to fully combust the main and post injection fuel amounts in the combustion chamber are also determined.

This invention discloses an automatic injection device suitable for pre-filled syringes, comprising a cap, outer shell, inner shell, inner tube, rotating support, nozzle, needle buckle, piston rod, syringe, first spring, and second spring. The medication is pre-installed in the automatic injection device according to the type and volume of the drug to be injected. In emergencies and harsh environments, it enables self-rescue and mutual rescue for individuals without medical expertise. Larger doses of medication can be administered intramuscularly with a single-person, one-button operation. This invention is not only highly adaptable to various environments (resistant to bumps and contamination), but also has a self-locking function to prevent leakage of the syringe due to improper operation. Furthermore, the automatic injection device is truly unusable after a single injection, avoiding secondary contamination and accidental injury.

The utility model relates to the technical field of micro-injection pumps, and discloses a portable micro-injection pump for subcutaneous administration, which comprises a pump shell, the front side and the rear side of the inner wall of the pump shell are both provided with storage bins, the inner walls of the two storage bins are both connected with needle cylinders in a sliding manner, the left sides of the inner walls of the two needle cylinders are both connected with piston rods in a sliding manner, and the piston rods are arranged in the pump shell. Pushing devices are fixedly connected to the front side and the rear side of the left end of the inner wall of the pump shell, a positioning block is fixedly connected to the bottom of the outer wall of a piston rod on the front side, a light touch switch is fixedly connected to the bottom of the inner wall of a storage bin on the front side, and the right ends of the two needle cylinders communicate with a three-way pipe. According to the utility model, the piston rod on the rear side is pushed by the pusher on the rear side to extrude the sterile normal saline or the sterilized injection water, so that the residual liquid medicine in the hose is extruded, and the liquid medicine in the hose is ensured to enter a human body; therefore, the problem that after an existing syringe is used for injection, medicine still remaining in a hose cannot be injected into subcutaneous tissue of a patient is solved.

Provided herein is a pre-fillable injection device that includes an end member having a fluid-filled reservoir therein that is formed by a depressible film. A port and hub are provided on a distal end of the end member to provide access to the reservoir. A double-ended needle is retained by the hub and has a proximal end positioned within the port and a distal end extending out from the port. The double-ended needle is movable from a first position where the proximal end is separated from the reservoir to a second position where the proximal end is positioned to pierce into the reservoir. A shield assembly is positioned at the distal end of the end member and may be actuated distally by a biasing member from a retracted position to an advanced position, with the distal end of the needle covered by the shield assembly when in the advanced position.

An object of the present disclosure is to prevent a foreign matter from entering an EGR passage. To achieve the object, a vehicle includes an engine, an exhaust manifold that divides an exhaust gas discharged from cylinders of the engine to cause the exhaust gas to enter and be discharged from an exhaust passage and an EGR passage, an exhaust gas treatment apparatus that is provided in the exhaust passage and includes a filter that collects fine particles in the exhaust gas, and a regeneration process control apparatus that performs post injection to execute a regeneration process of the filter, in which when the post injection is performed, the regeneration process control apparatus stops the post injection from an injector of a cylinder disposed such that a branch section to the EGR passage is located between an exhaust port of the cylinder and the exhaust passage.

The utility model relates to the technical field of pistons for injectors, and aims to solve the problems that pistons are low in sealing performance, force application is inconvenient, and injection force and injection amount cannot be accurately controlled. The utility model provides a piston for a pre-filled syringe. The piston comprises a piston body, the plug body comprises a first end part and a second end part; the first end part is provided with a conical sealing head; a sealing boss is annularly arranged on the outer side wall of the second end part; a plurality of convex rings are arranged between the conical sealing head and the sealing boss at intervals; the convex rings are arranged on the outer wall of the plug body; according to the piston for the pre-filled syringe, the sealing performance and the accuracy in the injection process are guaranteed, and the accumulation and waste of injection liquid and the resistance in the later stage of propelling injection are reduced.

The present application relates to the technical field of micro-recoil launching, and particularly relates to a double-chamber rear ejection passage air guide self-locking control and water-gas mixed rear ejection device. The device comprises a launching cylinder, a control body, a piston, a return spring, a lock pin, a control spring, a rear ejection pipeline, a nozzle clamp, an air guide pipe, a valve, a valve spring and a double-chamber structure. The present application adopts the method of air guide control lock pin self-locking, and the lock pin is moved by high-pressure gas to serve as a piston starting switch, and the lock pin is locked by the piston after being moved to the position, so that the piston cannot be returned during the continuous rear ejection process of the gas. At the same time, a water tank is arranged outside the rear ejection passage, and the water tank is in full contact with the contraction section of the rear ejection passage through a water guide hole to generate a water-gas mixture with high density for rear ejection, so that the rear ejection impulse of the launcher is greatly improved, and the purpose of greatly reducing the recoil force to realize micro-recoil launching is achieved. The present application can solve the problems that the rear ejection passage is difficult to be continuously conducted and the rear ejection impulse of the gas is small in the current double-chamber launching method.

The utility model provides a secondary battery cover plate and belongs to the technical field of secondary batteries. Comprising a cover plate body, penetrating grooves are formed in the two ends of the cover plate body, pole columns are arranged in the grooves, sealing rings are arranged at the contact positions of the lower portions of the pole columns and the grooves, the upper portions of the pole columns are sleeved with fixing rings, the fixing rings and the cover plate body are welded and combined in a flush mode, through holes are formed in the fixing rings, and pole column injection molding plates are arranged on the fixing rings. And the diameter of the pole injection molding plate is greater than that of the groove. According to the utility model, the sealing stability of the sealing ring and the safety stability of the secondary battery are improved.

A method for estimating an amount of fuel injected by a fuel injector (2, fig 7) of an internal combustion engine. Processing circuitry is coupled to one or more pressure sensors (6, fig 7) that output a rail pressure of a fuel rail (1, fig 7) supplying fuel to the fuel injector. The fuel injector injects fuel in response to receiving drive pulses of predetermined duration. The method comprises receiving a plurality of pre-injection rail pressure values and a plurality of post-injection rail pressure values, corresponding, respectively, to rail pressure values prior to and after a drive pulse. By extrapolation from the pre-injection rail pressure values, an upper rail pressure value corresponding to an index value at a predetermined timepoint within the drive pulse is determined. By extrapolation from the post-injection rail pressure values, a lower rail pressure value corresponding to the index value at the predetermined timepoint is determined. The pressure drop is determined as the difference between the upper and lower rail pressure values. The amount of fuel injected by the fuel injector is derived from the determined pressure drop. An engine control unit, a vehicle incorporating it, and a computer program product are also disclosed.