Abstract: A gas engine is disclosed. The gas engine may include a combustion cylinder. The combustion cylinder may include an intake with an intake valve. The combustion cylinder may include an exhaust with an exhaust valve. The gas engine may include a gas admission valve assembly coupled to the intake. The gas admission assembly may include a trimmable electro-hydraulically actuatable gas admission valve to control a gas flow into the intake.

Abstract: A fuel system is disclosed for use with an engine. The fuel system may have a common rail, a first type of fuel injector fluidly connected to the common rail, and a second type of fuel injector fluidly connected to the common rail. The second type of fuel injector may include a pumping portion having a bore formed therein, and a plunger reciprocatingly disposed in the bore. The second type of fuel injector may also include an accumulator portion fluidly connected to the common rail and configured to receive fuel pushed from the bore of the pumping portion by the plunger, a nozzle portion, and a valve portion fluidly connecting the pumping, nozzle, and accumulator portions.

Abstract: A gas engine is disclosed. The gas engine may include a combustion cylinder. The combustion cylinder may include an intake with an intake valve. The combustion cylinder may include an exhaust with an exhaust valve. The gas engine may include a gas admission valve assembly coupled to the intake. The gas admission assembly may include a trimmable electro-hydraulically actuatable gas admission valve to control a gas flow into the intake.

Abstract: A control system for a dual fuel engine having a liquid fuel supply and a gaseous fuel supply is disclosed. The control system may include at least one sensor operably coupled to a cylinder of the dual fuel engine and configured to monitor cylinder condition and transmit a cylinder condition signal. Additionally, a controller may be communicably coupled with the at least one sensor and the controller may be configured to receive the cylinder condition signal and determine whether the cylinder is operating in an abnormal operating condition. Whereas the controller determines the cylinder is operating in the abnormal operating condition, the controller sends a control signal for the liquid fuel supply to provide an amount of liquid fuel which is greater than an amount of liquid fuel supplied to the cylinder during a normal operating condition.

Abstract: A fluid conditioning module having a fluid inlet and a fluid outlet is provided. The fluid conditioning module includes a first pump element, a second pump element, a pressure regulator, a controller, and a prime mover to impart rotational motion in the first and second pump elements. A first pump inlet is in fluid communication with the fluid inlet. A filter inlet is in fluid communication with a first pump outlet and a second pump outlet, and a filter outlet is in fluid communication with the fluid outlet. A pressure regulator inlet and a pressure regulator outlet are in fluid communication with the filter outlet and a recirculation conduit, respectively. The control valve has a first position and a second position, which allows fluid flow through the recirculation conduit. The controller adjusts operation of one or more of the prime mover and the control valve based upon a predetermined parameter.

Abstract: A fluid injection system includes a fluid injector assembly; a fluid conditioning module having an outlet port that is fluidly coupled to an inlet port of the fluid injector assembly; an injector assembly outlet conduit fluidly coupled to an outlet port of the fluid injector assembly and disposed downstream of the fluid injector assembly, the injector assembly outlet conduit defining a pressure measurement port and a flow-restricting orifice, the pressure measurement port being disposed upstream of the flow-restricting orifice along the direction of fluid flow through the fluid injector assembly; a pressure sensor fluidly coupled to the pressure measurement port; and a controller operatively coupled to the fluid conditioning module and the pressure sensor. The controller is configured to adjust a flowrate of a fluid through the injector assembly inlet conduit based on a pressure signal from the pressure sensor.

Abstract: A fluid injection system includes a fluid injector assembly, a fluid conditioning module having an outlet port that is fluidly coupled to an inlet port of the fluid injector assembly via an injector assembly inlet conduit. The fluid injection system further includes a flush conduit fluidly coupled to the outlet port of the fluid conditioning module, a flush valve disposed in the flush conduit and configured to control a flowrate of fluid therethrough, and a controller operatively coupled to the fluid conditioning module and the flush valve, the controller being configured to adjust a flowrate of a fluid through the injector assembly inlet conduit by controlling a flowrate of fluid through the flush conduit.

Abstract: A pump includes a housing having an internal surface defining a volute configured to receive a pump impeller therein, an extension tube fluidly coupled to the volute, a wall of the extension tube having an internal surface disposed opposite an external surface, and a bonnet having an internal surface defining a first inlet aperture and a second inlet aperture therethrough, the first inlet aperture and the second inlet aperture being in fluid communication with the volute via the extension tube. The internal surface of the bonnet and the external surface of the extension tube define a bonnet flow path therebetween, the first inlet aperture of the bonnet being in fluid communication with the volute via the bonnet flow path.

Abstract: A filtration system is provided. The system provides a first filtration loop that provides one or more passes through a first filter using a first pump and a second filtration loop that provides one or more passes through a second filter using a second pump. The combination of a first pump and a second pump, each with a filter and each running independently of engine speed, provides an effective means of cleaning fuel.

Abstract: A filtration system is provided. The system provides a first filtration loop that provides one or more passes through a first filter using a first pump and a second filtration loop that provides one or more passes through a second filter using a second pump. The combination of a first pump and a second pump, each with a filter and each running independently of engine speed, provides an effective means of cleaning fuel.

Abstract: A control system for a dual fuel engine having a liquid fuel supply and a gaseous fuel supply is disclosed. The control system may include at least one sensor operably coupled to a cylinder of the dual fuel engine and configured to monitor cylinder condition and transmit a cylinder condition signal. Additionally, a controller may be communicably coupled with the at least one sensor and the controller may be configured to receive the cylinder condition signal and determine whether the cylinder is operating in an abnormal operating condition. Whereas the controller determines the cylinder is operating in the abnormal operating condition, the controller sends a control signal for the liquid fuel supply to provide an amount of liquid fuel which is greater than an amount of liquid fuel supplied to the cylinder during a normal operating condition.

Abstract: A fluid conditioning system includes a first filter mount having a first filter inlet port and a first filter outlet port, a first motor, a first pump operatively coupled to the first motor, a second filter mount having a second filter inlet port, a second pump, and a controller operatively coupled to the first motor. The controller is configured to operate the first pump at a flowrate that is higher than a flowrate of the second pump. An outlet of the first pump is fluidly coupled to the first filter inlet port via a first filter inlet conduit, and an inlet of the first pump is fluidly coupled the first filter outlet port via a first filter outlet conduit. An inlet of the second pump is fluidly coupled to the first filter outlet port via the first filter outlet conduit.

Abstract: A control system for a fuel supply module of an engine is provided. The control system includes a first fuel flow sensor in a fuel supply line which detects a first amount of fuel flowing through the fuel supply line and generates a first signal indicative of the first amount of fuel. The control system includes a second fuel flow sensor in the fuel return line which detects a second amount of fuel flowing through the fuel return line and generates a second signal indicative of the second amount of fuel. A controller receives the first signal and the second signal. The controller calculates a difference between the first signal and the second signal. The controller commands operation of the fuel supply module to supply a fuel flow to the engine independent of the engine speed, based on the difference between the first signal and the second signal.

Abstract: A fuel system is disclosed for use with an engine. The fuel system may have a common rail, a first type of fuel injector fluidly connected to the common rail, and a second type of fuel injector fluidly connected to the common rail. The second type of fuel injector may include a pumping portion having a bore formed therein, and a plunger reciprocatingly disposed in the bore. The second type of fuel injector may also include an accumulator portion fluidly connected to the common rail and configured to receive fuel pushed from the bore of the pumping portion by the plunger, a nozzle portion, and a valve portion fluidly connecting the pumping, nozzle, and accumulator portions.

Abstract: A fluid conditioning system includes a recirculation pump fluidly coupled to a reservoir via a first conduit; a delivery pump fluidly coupled in series with the recirculation pump, such that an outlet of the recirculation pump is fluidly coupled to an inlet of the delivery pump via a second conduit; and a recirculation loop including a recirculation filter, an inlet of the recirculation filter being fluidly coupled to the second conduit, and an outlet of the recirculation filter being fluidly coupled to the first conduit. The recirculation pump is configured to operate at a flow rate that is higher than a flow rate of the delivery pump.

Abstract: A port injection system for gaseous fuels may include an injector body defining a hydraulic fluid inlet chamber, a hydraulic fluid exit passageway, a hydraulic fluid actuation passageway, a check valve inlet passageway fluidly connected with the hydraulic fluid actuation passageway, a valve chamber, and a gaseous fuel inlet chamber. An electrical solenoid actuator may be mounted to the injector body, with the electrical solenoid actuator including a movable armature, and a poppet valve connected to the movable armature and disposed within the valve chamber. The poppet valve may be movable between a pressurized hydraulic fluid flow blocking position and a pressurized hydraulic fluid flow passing position. A check valve may be disposed within the check valve inlet passageway.

Abstract: A fluid injection system includes a fluid injector assembly, a fluid conditioning module having an outlet port that is fluidly coupled to an inlet port of the fluid injector assembly via an injector assembly inlet conduit. The fluid injection system further includes a flush conduit fluidly coupled to the outlet port of the fluid conditioning module, a flush valve disposed in the flush conduit and configured to control a flowrate of fluid therethrough, and a controller operatively coupled to the fluid conditioning module and the flush valve, the controller being configured to adjust a flowrate of a fluid through the injector assembly inlet conduit by controlling a flowrate of fluid through the flush conduit.

Abstract: A fluid conditioning module having a fluid inlet and a fluid outlet is provided. The fluid conditioning module includes a first pump element, a second pump element, a pressure regulator, a controller, and a prime mover to impart rotational motion in the first and second pump elements. A first pump inlet is in fluid communication with the fluid inlet. A filter inlet is in fluid communication with a first pump outlet and a second pump outlet, and a filter outlet is in fluid communication with the fluid outlet. A pressure regulator inlet and a pressure regulator outlet are in fluid communication with the filter outlet and a recirculation conduit, respectively. The control valve has a first position and a second position, which allows fluid flow through the recirculation conduit. The controller adjusts operation of one or more of the prime mover and the control valve based upon a predetermined parameter.

Abstract: A fluid conditioning system includes a recirculation pump fluidly coupled to a reservoir via a first conduit; a delivery pump fluidly coupled in series with the recirculation pump, such that an outlet of the recirculation pump is fluidly coupled to an inlet of the delivery pump via a second conduit; and a recirculation loop including a recirculation filter, an inlet of the recirculation filter being fluidly coupled to the second conduit, and an outlet of the recirculation filter being fluidly coupled to the first conduit. The recirculation pump is configured to operate at a flow rate that is higher than a flow rate of the delivery pump.

Abstract: A fluid injection system includes a fluid injector assembly; a fluid conditioning module having an outlet port that is fluidly coupled to an inlet port of the fluid injector assembly; an injector assembly outlet conduit fluidly coupled to an outlet port of the fluid injector assembly and disposed downstream of the fluid injector assembly, the injector assembly outlet conduit defining a pressure measurement port and a flow-restricting orifice, the pressure measurement port being disposed upstream of the flow-restricting orifice along the direction of fluid flow through the fluid injector assembly; a pressure sensor fluidly coupled to the pressure measurement port; and a controller operatively coupled to the fluid conditioning module and the pressure sensor. The controller is configured to adjust a flowrate of a fluid through the injector assembly inlet conduit based on a pressure signal from the pressure sensor.