Abstract: A device for injecting fuel over a cylinder head of an engine, including a tubular body, an injection nozzle forming an extension of the tubular body, a needle extending coaxially to the nozzle in a form of a rod, an end of which includes a head forming a valve on a seat supported by the injection nozzle, and an actuator configured to cause a movement of the head so as to open the valve, the needle configured to axially resonate when the same is subjected to axial pulses at a predetermined nominal frequency by the actuator. A system for mounting the device includes a spacer for bearing on the cylinder head, as well as on a front surface of the tubular body at the connection to the nozzle.

Abstract: For providing a combustion control device capable of decreasing unburned HC caused by a fuel attaching to a bore wall of a cylinder and unburned HC/CO produced by excessive diffusion of the fuel in premixed charge compression ignition combustion, an injector control unit controls an injector so as to start an initial fuel injection when a crank angle corresponds to an initial fuel injection start time when a piston arrives at such a position that the fuel injected from the injector reaches a lip but falls short of reaching a bore wall face of a cylinder, and terminate a final injection when the crank angle corresponds to a final fuel injection end time, when the piston arrives at such a position that the fuel injected from the injector reaches the lip but falls short of reaching a region below the lip in a cavity.

Abstract: A control system is provided with a piston TDC (top dead center) position variable mechanism and a valve operational characteristics variable mechanism. An actual distance between the valve and the piston of closest approach is calculated based on the actual operation states of these mechanisms. In addition, a limit distance of closest approach necessary to avoid interference between the valve and the piston is set, and, the piston TDC position variable mechanism and the valve operational characteristics variable mechanism are controlled to be driven to increase the actual distance.

Abstract: A method for operating an internal combustion engine, having an exhaust gas turbocharger, during a load change of the internal combustion engine, includes initiation of a closing process of a throttle valve of the internal combustion engine, disposed in an induction tract or intake section of the internal combustion engine, as a function of an air pressure which is present upstream of the throttle valve, in such a way that the air pressure always falls short of a surge limit or pumping limit of a compressor, disposed in the induction tract, of the exhaust gas turbocharger. A staged or stepped reduction in a torque of the internal combustion engine is performed by shutting off fuel injections at predetermined cylinders of the internal combustion engine. An internal combustion engine with an exhaust gas turbocharger is also provided.

Abstract: A compression ignition engine includes a high pressure injector for injecting a liquid fuel into a first combustion cylinder and a low pressure injector for injecting a gaseous fuel into a second combustion cylinder. A controller is coupled to the high pressure injector and the low pressure injector. The controller selects one of a liquid fuel mode and a gaseous fuel mode. If the liquid fuel mode is selected, air is compressed in a first cylinder, the compressed air is transferred to a second cylinder, and the liquid fuel is injected into the second cylinder. If the gaseous fuel mode is selected, air is compressed in the second cylinder, the compressed air is transferred to the first cylinder, and the gaseous fuel is injected into the first cylinder.

Abstract: In an ignition coil for an internal combustion engine, a column section and a notched section are provided in a side wall section of a case section of the ignition coil. A ventilation opening is formed in an up/down direction in the column section. The ventilation opening communicates with a ventilation passage formed between a sealing rubber and the case section and is open in an upper end section. A cover surrounding the column section and covering the upper end section is provided in the side wall section. A sealing section sealing the notched section is provided in the cover. The ignition coil has a filler resin that fills a space within the case section being in continuous contact with the sealing section and the side wall section and fixing the cover to the side wall section.

Abstract: The present disclosure provides a method to operate an internal combustion engine comprising storing a fueling command map having fueling index values, each of the fueling index values defining values for a plurality of fueling parameters, and a plurality of predetermined non-linear relationships that directly relate fueling index values to in-cylinder oxygen mass values; determining a temporary fueling index value; determining an in-cylinder oxygen mass value; identifying a predetermined relationship that directly relates fueling index values to in-cylinder oxygen mass values from the plurality of predetermined relationships to provide an identified predetermined relationship; determining that a current relationship of the temporary fueling index value to the calculated oxygen mass value differs from the identified predetermined relationship; and adjusting the temporary fueling index value using at least one fueling correction model to provide a revised fueling index value that approaches the identified pred

Abstract: The invention relates to a method for energizing an HF resonant circuit which contains an igniter as a component for igniting a fuel-air mixture in a combustion chamber of an internal combustion engine by means of a corona discharge, wherein the igniter comprises an ignition electrode and an insulator surrounding the ignition electrode, by means of a DC-AC inverter which is excited by successive current pulses which each last while a switch controlled by a control circuit is in its conducting switching state. It is provided according to the invention that the switch is actuated when an instantaneous value of an alternating current or an alternating current voltage excited in the HF resonant circuit falls below a first switching threshold (A?, B?, C?) and the switch s actuated when the instantaneous value of the alternating current or the alternating current voltage excited in the HF resonant circuit exceeds a second switching threshold (A+, B+, C+).

Abstract: A stop control system for an internal combustion engine, which is capable of restarting the engine automatically stopped, in optimum timing, thereby making it possible to positively prevent occurrence of fogging of window glass of a vehicle compartment and improve fuel economy. The engine is connected to a compressor of an air conditioner. According to the stop control system, during idle stop, window glass temperature is calculated, and according to the calculated window glass temperature, limit humidity below which fogging of the window glass does not occur is set. When determining compartment humidity becomes equal to or higher than the limit humidity, the idle stop is terminated and the engine is restarted. When the weather is rainy or snowy, the determining compartment humidity is corrected. When vehicle compartment temperature is not lower than a first predetermined temperature, the window glass temperature is corrected.

Abstract: In a control of an internal combustion engine control apparatus, the control apparatus includes: a fuel tank that stores a fuel; a vaporized fuel tank that is connected to an intermediate portion of an intake passageway of an internal combustion engine and that stores a vaporized fuel that is formed by vaporization of the fuel; an in-tank fuel supply device that supplies the fuel from the fuel tank into the vaporized fuel tank; and a normally-closed vaporized fuel supply valve that opens and closes a connecting portion between the vaporized fuel tank and the intake passageway. The control apparatus estimates air/fuel ratio in the vaporized fuel tank, and produces the vaporized fuel in the vaporized fuel tank by driving the in-tank fuel supply device, with the vaporized fuel supply valve closed, until the estimated air/fuel ratio becomes substantially zero, during operation of the engine.

Abstract: An arrangement for cooling of recirculating exhaust gases of a combustion engine (2) in a vehicle (1). The arrangement comprises a first EGR cooler (14), a driving means (15, 31) adapted to driving air through the first EGR cooler (14) in order to cool the exhaust gases in a return line (11) which are subjected to a first step of cooling in the first EGR cooler (14), and at least one second EGR cooler (19, 20) in which the exhaust gases in the return line (11) are intended to undergo a second step of cooling. The arrangement comprises an air line (16) which extends at least from the first EGR cooler (14) to the exhaust pipe (4) at a location between the turbine (5) and the exhaust-treating component (18a, 18b), which air line (16) is adapted to leading warm air from the first EGR cooler (14) into the exhaust line (4) at said location.

Abstract: A method of operating an electronically controlled dual fuel compression ignition engine includes injecting a pilot ignition quantity of liquid fuel into an engine cylinder from a dual fuel injector in an engine cycle during an auto ignition condition. An amount of gaseous fuel is also injected into the engine cylinder from the dual fuel injector in the same engine cycle. The amount of gaseous fuel is divided between a pre-mix quantity of gaseous fuel, which may be injected about 90° before top dead center, and a post ignition quantity of gaseous fuel that may be injected after top dead center, with both quantities being greater than zero. An engine controller may change a ratio of the pre-mix quantity of gaseous fuel to the post ignition quantity of gaseous fuel responsive to changing from a first engine speed and load to a second engine speed and load. The pilot ignition quantity of liquid fuel is compression ignited, which in turn causes the gaseous fuel to be ignited.

Abstract: The present invention relates to methods of using a low sulfur, low phosphorus, low-ash, zinc free consumable lubricating composition in an internal combustion engine equipped with a pilot ignition system, where the composition comprises: an oil of lubricating viscosity; a high TBN succinimide dispersant and where the lubricant composition overall has a sulfated ash value of up to about 0.2, a phosphorus content of up to about 50 to about 800 ppm and a sulfur content of up to about 0.4 percent by weight.

Abstract: A carburetor having an inlet opening that includes a pair of concavities operative to direct air toward the metering rod of the carburetor. A carburetor having an inlet opening that includes an arcuate manifold adjacent to the inlet opening and in fluid communication with a fuel reservoir. A carburetor having a slide assembly that includes a positioning mechanism operative to adjust the position of the metering rod relative to the throttle slide. A throttle slide that includes a flow guide that bisects an arcuate relief on an underside thereof. A method for configuring the throat of a carburetor that includes an upper portion of a first diameter and a lower portion of a second diameter that is offset from the first diameter. The method comprises deriving an optimum size for the first and second diameters and the offset based on the pumping efficiency and operating parameters of the engine.

Abstract: In a method for operating an internal combustion engine for adjusting a desired fuel/air mixture, wherein the rotary speed is determined by an operating curve based on a fuel/air mixture composition, wherein the operating curve has ascending and descending branches and a maximum, wherein a lambda value is smaller than 1 on the descending branch, it is first determined by statistic evaluation whether the operating point is on the ascending or descending branch. In a second method step, when the operating point is not on a desired branch of the operating curve desired as a starting point for a third method step, at least one operating parameter is changed until the operating point is positioned on the desired branch. In a third method step, the maximum of the operating curve is determined. Based on the determined maximum, the desired operating point of the internal combustion engine is then adjusted.

Abstract: Improved throttle body assemblies are described. More particularly, throttle body assemblies having improved throttle position sensor assemblies are described. In one aspect, a throttle body assembly for providing controlled aspiration to an engine is described. The assembly comprises a throttle body housing defining a throttle bore for receiving a throttle plate. The throttle plate is actuatable by an electric motor. The assembly further comprises a throttle position sensor configured to monitor positions of the throttle plate. The throttle assembly further comprises an electric discharge path formed between the throttle position sensor and the throttle body housing, wherein the electric discharge path substantially prevents the accumulation of residual electric charge across the throttle position sensor.

Abstract: A method is provided for adjusting a fuel composition estimate. The method generally uses a non-fuel related property to determine fuel composition. In some cases the method can be used after refueling and when the engine is operating without the benefit of oxygen sensor data, which can include evaluating data not based on characteristics of the fuel or exhaust from its combustion, such as engine torque variations while using the fuel. The method can include monitoring estimated engine torque to determine whether first variations in engine torque exceed a threshold, and, if so, modifying the previous estimate of fuel composition prior to the refueling event by a pre-determined amount.

Abstract: An EGR valve includes an aluminum valve body, an outer metal ring, an inner resin ring, a butterfly valve, and a seal ring. The valve body includes a gas passage therein. The gas passage is part of an EGR passage, through which EGR gas is returned from an exhaust passage to intake passage of an engine. The outer ring has a cylindrical shape, and is fixed and disposed on an inner wall of the gas passage. The inner ring has a cylindrical shape, and is disposed on an inner peripheral wall of the outer ring. The butterfly valve opens or closes an inside of the inner ring, and includes a seal fitting groove at an outer peripheral edge of the butterfly valve. The seal ring is fitted into the groove, and seals a clearance between the butterfly valve and the inner ring when the butterfly valve is closed.

Abstract: A method and control module for controlling an engine includes a requested torque module that generates a requested torque and a turbo boost level module that determines a desired boost level based on the driver requested torque. The control module further includes a pulse determination module that determines a primary fuel injection pulsewidth and a secondary fuel injection pulsewidth based on the driver requested torque and the desired boost level and controls a first injection into the cylinder with the primary fuel injection pulsewidth and a second injection into the cylinder with the secondary fuel injection pulsewidth.

Abstract: The invention relates to a method for the open-loop control and the closed-loop control of an internal combustion engine (1), the rail pressure (pCR) being controlled in a closed loop mode in the normal operating state and an emergency operation mode being activated once a defective rail pressure sensor (9) is detected, in which emergency operation the rail pressure (pCR) is controlled in an open loop mode. The invention is characterized in that in the emergency operation mode, the rail pressure (pCR) is gradually increased until a passive pressure relief valve (11) is activated which redirects fuel from the rail (6) to the fuel tank (2) when it is open.