Abstract: A diesel combustion system including a piston, an annular impinging block, and a combustion chamber. The combustion chamber is divided by the annular impinging block into an upper chamber and a lower chamber. The annular impinging block includes a lower guide surface that is adjacent to the lower chamber and that extends from a trough line connected to the piston to a crest line. The ratios among the inner diameter of the top of the piston, the outer diameter of the top of the piston, the diameter of the trough line, and the diameter of the crest line define the shape of the combustion chamber which leads to increased rate of combustion, reduced soot emission, and increased fuel efficiency.

Abstract: A control apparatus for an internal combustion engine for adjusting an amount of air passing through a catalyst during fuel cut-off operation of the internal combustion engine, the temperature of the catalyst is caused to rise, when the fuel cut-off operation of the internal combustion engine is carried out in a state where the temperature of the catalyst is low. The apparatus is constructed such that in cases where the fuel cut-off operation is carried out in a state where the temperature of the catalyst is relatively low but equal to or higher than an activation temperature thereof, the amount of air passing through the catalyst is made larger in a period of time in which the catalyst becomes a rich atmosphere immediately after the start of the fuel cut-off operation, in comparison with a subsequent period of time in which the catalyst becomes a lean atmosphere.

Abstract: A friction loss management system for an engine, comprises a combustion engine comprising a crankshaft and a plurality of cylinders, a reciprocating piston assembly connected to the crankshaft, a fuel injector connected to an injection controller, an intake valve connected to an intake valve controller, and an exhaust valve connected to an exhaust valve controller. A control unit comprises at least one set of control algorithms configured to receive engine power demand data, and determine a number of cylinders of the plurality of cylinders for deactivation based on the received engine power demand data and further based on sensed or stored friction values for the plurality of cylinders. Determining the number of cylinders of for deactivation minimizes friction between the plurality of cylinders and their respective reciprocating piston assembly by selecting a cylinder combination of active cylinders and deactivated cylinders with the lowest total friction while meeting engine power demand.

Abstract: The present disclosure relates in general to injectors and, more specifically, to a fuel injection assembly that may be used in an internal combustion engine. In some embodiments, a fuel injection assembly may include: a fuel injector with a fuel inlet port and a fuel outlet end; and an injector cup with a recess receiving the fuel inlet port of the fuel injector through an opening of the recess. The injector cup comprises a collar extending circumferentially around the opening. The injector cup comprises a tab extending longitudinally beyond the opening in a direction towards the fuel outlet end. The tab projects axially beyond the collar in a longitudinal direction towards the fuel outlet end. The fuel injector comprises a pocket receiving the tab.

Abstract: A check valve device includes a valve portion elastically deformable to prevent or allow a flow of a vapor fuel through a fluid passage in one direction by contacting with or separating from a valve seat. An upstream passage forming member has the valve seat and the fluid passage located upstream of the valve portion. A downstream passage forming member includes a terminal portion housed in the upstream passage forming member and having a downstream passage. A narrowed passage provided inside the terminal portion or between the upstream passage forming member and the terminal portion. A cross-sectional area of the narrowed passage is set to be smaller than any of the fluid passage and the downstream passage.

Abstract: A fuel injection unit for assembly to a cylinder head and for injecting first and second fuel to a cylinder of an internal combustion piston engine includes a first fuel feeding section, a second fuel feeding section, a pressure accumulator in the first fuel feeding section, and a flow fuse arranged in the first fuel feeding section between the pressure accumulator and a fuel injection valve of the first fuel feeding section. The fuel injection valve includes a fuel handling section and control section, and the control section is a hydraulic control section fluidly separated from the fuel handling section.

Abstract: The present connection structure of an intake pipe is a connection structure of an intake pipe for an engine head. The connection structure includes a partition wall member partitioning an intake passage along its axial direction and being inserted into the engine head, and an elastic gasket having a frame shape provided between the engine head and the intake pipe to seal therebetween. The intake pipe is provided at its connection end portion with an elastic body that presses the partition wall member in its insertion direction.

Abstract: A method to detect and mitigate sensor degradation in an automobile system includes: collecting output signal data from at least one of a sensor and an actuator which is outputting the signal data related to operational parameters of a vehicle system; placing the sensor or the actuator in communication with a fault box used to purposely corrupt the output signal data; analyzing patterns of the output signal data compared to signal data from a nominal operating sensor or actuator using an artificial intelligence program; identifying when a statistical range of the patterns exceeds a first threshold level; and modifying a control signal to change the operational parameters of the vehicle system.

Abstract: An exhaust valve rocker arm assembly operable in a combustion engine mode and an engine braking mode can include a rocker shaft and a rocker arm. The rocker shaft can define a pressurized oil supply conduit. The rocker arm can receive the rocker shaft and is configured to rotate around the rocker shaft. The rocker arm can have an oil supply passage defined therein. A valve bridge can engage a first exhaust valve and a second exhaust valve. A hydraulic lash adjuster assembly can include first and second plunger bodies, the first plunger body can engage the valve bridge.

Abstract: In one example, an air intake system is provided. The air intake system includes a first air inlet duct providing intake air to an engine intake conduit, the first air inlet duct including an opening positioned external to an engine compartment. The air intake system also includes a second air inlet duct positioned upstream of the engine intake conduit and external to the engine compartment, the second air inlet duct including a foam plug selectively impeding airflow through the second air inlet duct, the foam plug spanning an opening of the second air inlet duct.

Abstract: An evaporated fuel treatment device is provided in a canister including first to third chambers. The first chamber is provided with an inflow port and an outflow port at an end part thereof, and is connected to the second chamber. The evaporated fuel treatment device is configured as the third chamber of the canister. The third chamber has disposed therein activated carbon as an adsorbent material. The side connected to the second chamber in the third chamber is defined as second chamber side, and the side opposite to the second chamber side is defined as atmosphere side. An atmosphere port is provided at an end part on the atmosphere side of the third chamber. The third chamber is provided with a highly adsorptive layer and a low adsorptive layer which are aligned from the second chamber side to the atmosphere side.

Abstract: A vibration suppression device of a vehicle includes a controller, a memory a vibration detector. The controller determines whether the vehicle is in a normal driving condition. The controller obtains data of a longitudinal vibration of the vehicle from the vibration detector. The controller determines whether a vibration level corresponding to a reference frequency band is greater than a vibration level threshold. The controller calculates a torque generated by each cylinder and a correction amount for the fuel injection amount for each cylinder so that a torque difference among the plurality of cylinders is reduced. The controller corrects the command fuel injection amount for each cylinder based on the calculated correction amount, controls each fuel injection device based on the corrected command fuel injection amount, and stores the calculated correction amount in the memory member.

Abstract: A fuel injection control apparatus for an internal combustion engine includes a low pressure fuel pump, a low pressure fuel passage, a high pressure fuel pump, a high pressure fuel passage, a fuel injection valve, a high pressure controller, and a low pressure controller. The low pressure controller calculates a feedforward correction amount that increases as a request injection amount of the fuel injection valve increases and an increase rate of the high pressure target value increases when a high pressure target value increases. The low pressure controller calculates a feedback correction amount based on a low-side pressure deviation when the high pressure target value increases. The low pressure controller controls driving of the low pressure fuel pump based on a sum of the feedforward correction amount and the feedback correction amount.

Abstract: A method and system for determining remaining useful life of an in-use injector of a reciprocating engine is disclosed. The method includes determining nozzle wear relationship data for different duty cycles of the in-use injector, and using the nozzle wear relationship data together with operating parameters for the reciprocating engine, and emission relationship data to determine actual emission levels for the in-use injector based on the wear relationship data and the emission relationship data. The method and system further include determining remaining useful life of the in-use injector based on actual emission levels and the nozzle wear relationship data; and controlling an operation of the reciprocating engine based on the actual emission levels.

Abstract: An object of the present invention is to provide a working machine and a working machine monitoring system using the same which is capable of improving the accuracy in determining fuel property. The working machine is provided with an engine operation parameter acquisition module (1041) that acquires an engine operation parameter representing the operation state of an engine mounted on the working machine; a refueling time acquisition module (1011) that acquires a refueling time when the working machine is supplied with fuel; and a fuel property determination module (1014) that determines the property of the fuel based on a comparison result of the time when the engine operation parameter changes, with the refueling time.

Abstract: Systems and methods for correcting an engine intake camshaft position and an engine exhaust camshaft position for a variable valve timing engine are described. In one example, intake manifold pressure of an engine is sampled while a motor/generator rotates the engine at a predetermined speed without fuel being supplied to the engine. A camshaft angle where minimum intake manifold pressure is observed is a basis for correcting camshaft position.

Abstract: Methods and systems are provided for a gear driven diesel fuel injection pump of an engine. In one example, a front end of an engine includes an idler gear in meshing engagement with a first end of a crankshaft and a fuel pump drive gear in meshing engagement with the idler gear. The front end of the engine may further include a fuel pump, where an input shaft of the fuel pump is directly coupled to the fuel pump drive gear.

Abstract: A vehicle control apparatus performs an in-excess determination control by monitoring a drive power in-excess indicator at a time when a temporary in-excess state occurs which indicates that a drive power excess amount exceeds a predetermined value. As such, when a vehicle-dynamic safety parameter fulfills a prescribed condition, the vehicle control apparatus lowers an indicator threshold for determining an excess drive power continuation time from an original value to a lowered value. As a result, the excess drive power continuation time is determined as exceeding the indicator threshold, which indicates that a drive power of a vehicle is in excess, and a fail-safe instruction signal output is brought forward from an original timing to an earlier timing. Therefore, when a degree of dangerousness of a vehicle behavior is estimated to be relatively high, a fail-safe action is promptly taken.

Abstract: The method for controlling valve timing for a turbo engine includes: classifying control regions depending on an engine speed and an engine load; applying a maximum duration to an intake valve and applying a long duration to an exhaust valve in a first control region; applying the maximum duration to the intake and applying the long duration to the exhaust valve in a second control region; applying the long duration to the exhaust valve and advancing an intake valve closing (IVC) timing in the third control region; applying a short duration to the exhaust valve and controlling the IVC timing in the fourth control region; controlling a wide open throttle valve (WOT) and applying the short duration to the exhaust valve in the fifth control region; controlling a WOT and controlling the IVC timing by applying the long duration to the exhaust valve in the sixth control region.

Abstract: A vehicle includes an engine and a controller programmed to, responsive to an estimated oil dilution level of the engine exceeding a first threshold, issue commands such that regenerative braking is inhibited to increase a temperature of the engine, and responsive to the estimated oil dilution level falling below the first threshold, discontinue issuing the commands.