12results about "Fuel-injection pumps" patented technology

The objective is to provide a control device for an internal combustion engine that can adjust the amount of fuel injected. [Solution] A control device for an internal combustion engine comprising: an injection control unit that controls a first fuel injection valve provided in the cylinder of the internal combustion engine; a prediction unit that predicts the load ratio of the internal combustion engine; and a setting unit that determines the required amount of fuel injection based on the predicted load ratio, wherein if the predicted load ratio is greater than the actual load ratio, the injection control unit injects a first amount less than the required amount from the first fuel injection valve.

A method for controlling air and fuel supply to an engine of a machine includes: detecting, by a processing circuit, a change in a loading condition on the engine of the machine based on use of an implement system of the machine; and providing, by the processing circuit, a command to (i) a fueling system of the machine to increase an amount of fuel provided to the engine by the fueling system and (ii) an air handling system of the machine to increase at least one of (a) an amount of air or (b) a boost pressure of the air provided to the engine by the air handling system in response to an increase in the loading condition.

A system and process for operating an internal combustion engine includes a fuel injector connected to a fuel rail, which injects fuel during an engine cycle. A high-pressure pump is connected to the fuel rail and includes pump elements that pressurize the fuel, as well as discrete-flow inlet metering valves that control the fuel flow from the pump elements. The fuel flow from the high-pressure pump's pump elements to the fuel rail is interrupted by the discrete-flow inlet metering valves during a portion of the engine cycle to obtain fuel pressure readings from the fuel rail during fuel injection.

The purpose of this invention is to provide a piston-type booster pump and a fuel injection system based on a dual-solenoid valve booster pump with a flexible and variable injection pattern, belonging to the field of engine technology. Fuel is pressurized by an electronically controlled unit pump and enters the high-pressure common rail. The piston-type booster pump can further pressurize the pressurized fuel, thereby changing the injection pressure of the injector and achieving a variable fuel injection pattern. When only one booster pump solenoid valve is open, the piston-type booster pump has a long booster response time and a slow increase in injection rate. When both booster pump solenoid valves are open simultaneously, the piston-type booster pump has a short booster response time and a fast increase in injection rate. The electronic control unit achieves flexible control of the injection pattern by coordinating the opening and closing sequence of the two booster pump solenoid valves, the electronically controlled unit pump solenoid valve, and the injector solenoid valve.

Control device (90) for a fuel injection system (10), wherein the fuel injection system comprises: a low-pressure pump (20) configured to compress a fuel in a fuel tank (18) and deliver the fuel; a high-pressure pump (30) configured to increase the pressure of the fuel delivered by the low-pressure pump and to deliver high-pressure fuel; a storage tank (60) configured to store the high-pressure fuel delivered by the high-pressure pump; a fuel injector (62) configured to inject the high-pressure fuel contained in the reservoir; a relief valve (80) provided in a high-pressure section (44, 60) downstream of the high-pressure pump and configured to open when a high-pressure anomaly occurs in the high-pressure section; and a return line (45) which is configured such that it returns the high-pressure fuel in the high-pressure section to a low-pressure section provided downstream of the low-pressure pump by opening the relief valve, wherein the control device is configured to control the high-pressure fuel in the storage tank within a predetermined pressure range, wherein the control device comprises: a fuel pressure determining unit configured to determine whether the pressure in the high-pressure section rises to a predetermined determining pressure that is higher than the pressure range and lower than a valve opening pressure for opening the relief valve; and a restriction unit configured to cause the low-pressure pump to implement a fuel delivery restriction when the fuel pressure determination unit determines that the pressure in the high-pressure section is rising to the determination pressure.

An adjustment system (1) for an injection pump (2) of an internal combustion engine (10) comprises an input-side gear mechanism element (4), in particular a gearwheel, which is driven by the crankshaft of the internal combustion engine (10), and a three-shaft gear mechanism element (3), which is actuated by the input-side gear mechanism element (4), wherein the three-shaft gear mechanism element additionally has an adjustment shaft (8) as an input-side shaft and an output-side shaft (9) designed to couple to the injection pump (2), and a drive unit (13) is provided for driving the adjustment shaft (8), the drive unit comprising a reduction gear (15), for example in the form of a harmonic drive.

A controller is employed for an internal combustion engine capable of using a fuel containing ethanol. The internal combustion engine includes multiple cylinders, multiple fuel injection valves, an intake passage, and a purge port. The purge port discharges purge gas containing fuel vapor generated in the fuel tank to the intake passage. The processing circuitry of the controller individually corrects fuel injection amounts of the fuel injection valves such that a fuel injection amount of the fuel injection valve corresponding to a cylinder into which a large amount of the purge gas is introduced is smaller than a fuel injection amount of the fuel injection valve corresponding to a cylinder into which a small amount of the purge gas is introduced.

The application discloses a kind of anti-abrasion sealing engine rack protector, belong to engine rack protection technical field, this anti-abrasion sealing engine rack protector, including rack mechanism, shell mechanism, sealing washer mechanism, tightening mechanism, elastic self-locking mechanism, sealing cover mechanism and self-adapting sealing mechanism, one end outside of the rack mechanism is provided with shell mechanism.The application is sealed by the setting of sealing washer mechanism, tightening mechanism and elastic self-locking mechanism, realizes the sealing protection of engine rack and engine shell junction, and realizes elastic self-locking, so as to automatically compensate the gap between sealing ring and rack, provide long-acting maintenance-free sealing protection, the application is set by shell mechanism, sealing cover mechanism and self-adapting sealing mechanism, eliminates the non-sealing gap at rack connecting component sliding channel, so that the device can provide overall protection to rack without affecting the expansion of rack.

Method for operating a fuel system (8) of an internal combustion engine with a pressure sensor (234) arranged downstream of a suction pump (208) for measuring a delivery pressure, comprising: During pulsed operation of the suction pump (208), the suction pump (208) is switched off when a detected delivery pressure increases to a desired peak pressure or when an on-time of the suction pump (208) reaches a calibrated maximum, and the suction pump (208) is switched on when either the detected delivery pressure decreases to a desired trough pressure or a volume of fuel consumed by the internal combustion engine reaches a predetermined volume, characterized in that in response to the fact that the on-time of the suction pump (208) reaches the calibrated maximum, indicating an error of the pressure sensor (234) within the normal range and initiating a calibration of the detected delivery pressure, wherein the calibration involves adding an offset to the detected delivery pressure and In response to the volume of fuel consumed by the internal combustion engine reaching the predetermined volume, indicating an error of the pressure sensor within the normal range and initiating a calibration of the detected delivery pressure, wherein the calibration involves subtracting an offset from the detected delivery pressure.

The utility model discloses a kind of speed regulating device of high sensitivity torsion spring type structure, it is related to fuel injection pump mechanical speed regulator field, including rear shell, speed regulating torsion spring, speed regulating arm assembly, intermediate shaft, speed regulating lever, speed regulating sleeve, fly block, rack rod return spring, rack rod, connecting rod and adjusting assembly;Speed regulating arm assembly includes speed regulating arm, and intermediate shaft is arranged in the middle of speed regulating arm, and speed regulating arm is provided with inlay on the side away from speed regulating torsion spring, and speed regulating arm shaft is arranged in the side close to speed regulating torsion spring of speed regulating arm, and the sleeve of slide is sleeved in the both ends of speed regulating arm shaft, and speed regulating torsion spring is pressed and combined on the sleeve;This kind of speed regulating device of high sensitivity torsion spring type structure can improve the sensitivity of speed regulating device adjustment, to realize the accurate regulation of rotational speed.

A control device, for an internal combustion engine, includes an injection control unit configured to control a first fuel injection valve provided in a cylinder of the internal combustion engine, a prediction unit configured to predict a load factor of the internal combustion engine, and a setting unit configured to determine a required amount of fuel injection amount based on the predicted load factor. The injection control unit is configured to perform fuel injection of a first amount smaller than the required amount from the first fuel injection valve, when the predicted load factor is larger than an actual load factor.

An internal combustion engine system is provided that is capable of improving the responsiveness and stability of the control system with respect to the downstream pressure of a high-pressure fuel pump. A control unit of the internal combustion engine system calculates a target flow rate for the high-pressure fuel pump based on a pressure deviation between a target fuel pressure and a pressure sensor reading, calculates a limit flow rate based on the pressure deviation and its rate of change, selects a lower flow rate control value from the target flow rate and limit flow rate values, and controls an open / close valve of the high-pressure fuel pump according to the flow rate control value.The control device calculates the setting value by multiplying the reciprocal of the proportional gain by the difference between the flow rate setpoint and the flow rate control value, limits the setting value by the limiting value, calculates the pressure deviation setting value by subtracting the limited setting value from the pressure deviation, and calculates the flow rate setpoint by adding an integral term obtained by integrating the pressure deviation setting value and multiplying the integral value by an integral gain and a proportional term obtained by multiplying the pressure deviation and the proportional gain.