| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 123496000 | Variable rate of injection stroke | 6 |
| 20130255643 | ENGINE WITH VARIABLE FLOW RATE OIL PUMP - The engine with a variable flow rate oil pump includes a subsidiary relief passage that extends from an oil passage-switching valve to a subsidiary oil pump, a main relief passage that extends from the oil passage-switching valve to the main oil pump separately from the subsidiary relief passage, and a check valve that is provided in the subsidiary discharge passage and cuts off the flow of oil from the main discharge passage side to the oil passage-switching valve side. The oil passage-switching valve has a main pressure-adjusting chamber for the main oil pump, a subsidiary pressure-adjusting chamber of for the subsidiary oil pump, and a spool valve that performs partitioning between the main pressure-adjusting chamber and the subsidiary pressure-adjusting chamber. | 10-03-2013 |
| 20130340721 | ABNORMALITY DETECTION APPARATUS FOR A FUEL SUPPLY SYSTEM - Provided is an abnormality detection apparatus for a fuel supply system that can reliably detect an abnormality of the fuel pressure changing operation of the fuel supply system, comprising a fuel pump unit ( | 12-26-2013 |
| 20140174408 | METHOD FOR DETERMINING A FUEL FRACTION IN OIL - A method for determining a fuel fraction in the oil of an oil circuit ( | 06-26-2014 |
| 20150107560 | PLUNGER FOR AN INTERNAL COMBUSTION ENGINE FUEL PUMP - A plunger of a fuel pump is disclosed. The plunger may have a cylindrical base configured for axial movement and rotation within a pump barrel. The plunger may also have a fuel amount controlling end. The fuel amount controlling end may have a recessed surface region. The fuel amount controlling end may also have a sealing surface region. Further, the fuel amount controlling end may have a control interface connecting the recessed surface region with the sealing surface section in a radial direction. The transition from the recessed surface region to the control interface may be curved. | 04-23-2015 |
| 20150330346 | FUEL SUPPLY SYSTEM FOR INTERNAL COMBUSTION ENGINE - A fuel supply system may include a fuel pump configured to supply fuel from a fuel tank to a target, a motor for driving the fuel pump, and a controller coupled to the motor. The controller may determine a duty ratio of a control signal through a feedback control and to output the control signal to the motor, so that a fuel pressure of the fuel supplied from the fuel tank approaches a target fuel pressure. The controller may estimate the duty ratio based on the target fuel pressure and information regarding a fuel pressure of the fuel supplied from the fuel tank, and may guard an upper limit of the duty ratio by an upper limit guard value. The upper limit guard value may be determined based on a rotational speed of the motor. | 11-19-2015 |
| 20150337783 | DIRECT INJECTION PUMP CONTROL FOR LOW FUEL PUMPING VOLUMES - Methods are provided for controlling a solenoid spill valve of a direct injection fuel pump, wherein the solenoid spill valve is energized and de-energized according to certain conditions. A control strategy is needed to operate the direct injection fuel pump when small fractional trapping volumes are commanded, wherein a small amount of fuel is compressed and sent to the direct injection fuel rail. To maintain reliable and repeatable solenoid spill valve behavior for small fractional trapping volumes, methods are proposed that involve energizing the solenoid spill valve for a minimum angular duration below a trapping volume fraction threshold. | 11-26-2015 |
