CATERPILLAR ENERGY SOLUTIONS GMBH Patent applications |
Patent application number | Title | Published |
20160024995 | IGNITION DEVICE WITH PRE-COMBUSTION CHAMBER - An ignition device with a pre-combustion chamber for an internal combustion engine is disclosed. The internal combustion engine may have a plurality of cylinders. Each cylinder may define a main combustion chamber. The ignition device may have a first pre-combustion chamber part configured to at least partially accommodate a spark plug. The ignition device may also have a second pre-combustion chamber part defining at least a portion of the pre-combustion chamber. The second pre-combustion chamber part may include at least one orifice configured to be fluidly connected to the main combustion chamber. The second pre-combustion chamber part may be detachably mountable to the first pre-combustion chamber part, such that the first and second pre-combustion chamber parts are axially secured to one another and rotatable with respect to one another. | 01-28-2016 |
20160003179 | CONDENSATION CONTROL SYSTEM FOR ENGINE - A system for controlling condensation of water within an intake manifold of an engine is disclosed. The system may have a humidity sensor. The humidity sensor may be configured to generate a signal indicative of a humidity of intake air. The system may also have a controller communicably coupled to the humidity sensor. The controller may be configured to receive the signal indicative of the humidity of the intake air. The controller may be also configured to control an operational parameter of at least one of the engine and an engine component to maintain the humidity of the intake air within the intake manifold below a predetermined threshold. | 01-07-2016 |
20150361876 | HYDROGEN FLUSHED COMBUSTION CHAMBER - A method for operating an engine is disclosed. The method may include supplying the engine with gas. The method may also include supplying the engine with hydrogen from a hydrogen source. Further the method may include charging a combustion chamber of the engine with a first amount of loaded gas, which may include a gas air mixture. The method may also include delivering, to the combustion chamber, a second amount of hydrogen. The second amount may be a predetermined fraction X of the first amount. The predetermined fraction may be selected to achieve a predetermined ratio λ of an actual amount of the air in the combustion chamber and a stoichiometric amount of the air in the combustion chamber. The hydrogen and the loaded gas may form a loaded gas mixture in the combustion chamber. The method may also include igniting the loaded gas mixture in the combustion chamber. | 12-17-2015 |
20150337774 | UNBURNED FUEL VENTING IN INTERNAL COMBUSTION ENGINES - An internal combustion engine is disclosed. The engine may have a cylinder. The engine may also have a piston reciprocally movable within the cylinder between a top dead center (TDC) and a bottom dead center (BDC). The piston may separate the cylinder into an upper piston section and a lower piston section. The piston may have a piston ring assembly with a piston ring configured to sealingly contact the cylinder. The piston ring assembly may have a thickness (D). The engine may have an annular crevice in fluid communication with the upper piston section. The engine may also have a plurality of venting grooves that may fluidly connect the annular crevice with the lower piston section, only when the crank angle ranges from about 85° to 95° and about 265° to 275° after the top dead center (TDC). | 11-26-2015 |
20150330333 | UNBURNED FUEL VENTING IN INTERNAL COMBUSTION ENGINES - An internal combustion engine is disclosed. The engine may have a cylinder that defines a combustion chamber for combusting an air/fuel mixture. The engine may also have a piston reciprocally movable within the cylinder between a top dead center (TDC) and a bottom dead center (BDC). The piston may have an uppermost piston ring configured to sealingly contact the cylinder. The engine may have an annular crevice facing the combustion chamber. The crevice may be defined by the cylinder, the piston, and the uppermost piston ring. The engine may also have a flow channel fluidly connected to the combustion chamber. The flow channel may direct unburned air/fuel-mixture out of the combustion chamber. The at least one flow channel may be fluidly connected to the annular crevice for a crank angle range of about 85° to 95° and about 265° to 275° after the top dead center (TDC). | 11-19-2015 |
20150308386 | GAS MIXER FOR INTERNAL COMBUSTION ENGINES - A gas mixer for mixing gaseous fuel and air for an internal combustion engine is disclosed. The gas mixer may have a housing defining an air path for mixing the gaseous fuel and the air within the air path. The housing may have a narrowed portion. The gas mixer may also have a displacement body axially displaceable and coaxially arranged within the air path. The displacement body and the housing may define an air passage disposed at the narrowed portion. The gas mixer may further have a fuel inlet fluidly connected to the air passage. The fuel inlet may be configured to supply gaseous fuel to the air passage. Further, the gas mixer may have an adjusting unit disposed at least partially within the air path. The adjusting unit may be connected to the displacement body and may be configured to axially displace the displacement body. | 10-29-2015 |
20150285126 | OIL CHANNEL FOR ENGINE - An engine block is disclosed. The engine block may have a cylinder. The engine block may also have a piston that may slide within the cylinder. Further, the engine block may have a liner positioned between the cylinder and the piston. The engine block may also have a groove disposed circumferentially about the liner. The groove may be in communication with the liner and the cylinder. The engine block may have at least two oil nozzles arranged spaced apart from each other. The oil nozzles may be configured to spray oil on the piston. The engine block may also have an oil channel configured to supply oil to at least one of the two oil nozzles via the groove. | 10-08-2015 |
20150240474 | ASSEMBLY COMPRISING AN ENGINE - An assembly includes a combustion engine and a housing to protect an engine, wherein the housing has a first wall and the first wall has a container. | 08-27-2015 |
20150219006 | CYLINDER HEAD WITH COUNTERSINK - A cylinder head of a static spark-ignited gas engine may include at least two exhaust ports, at least two inlet ports, at least one cylinder axis, and a bottom side. Each inlet port runs to the bottom side of the cylinder head and may have a valve seat for inlet valve. Each valve seat may have a corresponding center axis. At least one inlet port has a countersink in the border area of the bottom side. The countersink may have an offset axis shifted from the corresponding center axis. The countersink may also have a maximum radius with reference to the corresponding center axis. The maximum radius and a straight line may form an angle φ. The straight line may connect the cylinder axis with the corresponding center axis. The angle φ may fulfill the following condition: 70°<=φ<=110°. | 08-06-2015 |
20150211438 | PISTON WITH OIL RESERVOIR - A piston may include a piston body having a piston skirt. The piston may further include at least one piston ring groove arranged in the piston skirt. A lowermost piston ring groove may be arranged in a first plane and at least one blind hole may extend at least partially from the lowermost piston ring groove into the piston body. Each blind hole may act as an oil reservoir contributing to lubrication between the piston skirt and a cylinder liner during movement of the piston. | 07-30-2015 |
20150176520 | SPARK PLUG - A spark plug may include a shell surrounding a lower part of an insulator. The shell may be provided with a tool engaging portion, a seal face configured to contact a corresponding seal of a cylinder head of an internal combustion engine, a cylinder engaging threaded portion having a thread diameter (D) configured to screw the spark plug in a threaded bore of the cylinder head, and an intermediate portion extending between the shoulder and the cylinder engaging threaded portion. The intermediate portion may have a length (L | 06-25-2015 |
20150107559 | PISTON OF AN INTERNAL COMBUSTION ENGINE - An engine block of an internal combustion engine is disclosed. The engine block may have a piston and at least one gas exchange valve. The piston may have a piston skirt having a first center axis. The piston may also have a piston head delimiting the piston skirt at the top with a diameter D. The piston head may have a piston head edge and a piston head recess with a piston recess wall having a height H. At least one valve pocket may be formed into the piston head edge. The at least one valve pocket may have a valve pocket depth T with respect to the piston head edge. The valve pocket depth T may fulfil the following condition with respect to the wall height H: 0.05 H<=T<=0.5H. | 04-23-2015 |
20150107543 | PISTON OF AN INTERNAL COMBUSTION ENGINE - A piston for an internal combustion engine is disclosed. The piston may have a piston skirt with a centre axis. The piston may also have a piston crown disposed adjacent a top of the piston skirt. The piston crown may have a diameter D. The piston crown may have a piston crown margin of width b extending in a circumferential direction. The piston crown may also have a piston trough with a depth t. The piston trough may have a piston trough wall with a base diameter. The piston trough may also have at least one recess with a height h. The height h parallel to the direction of the centre axis may satisfy the following requirement: 0.2 t<=h<=t. | 04-23-2015 |
20150101560 | PISTON OF AN INTERNAL COMBUSTION ENGINE - A piston of an internal combustion engine is disclosed. The piston may have a piston skirt having a central axis. The piston may also have a piston crown delimiting the piston skirt with a diameter D adjacent a top of the piston skirt. The piston crown may have an edge of the piston crown of width b and a piston crown recess of depth t. The piston crown recess may have a piston recess wall with an opening cross section of diameter d. At least one groove with an internal diameter dn may be provided within the edge of the piston crown. The at least one groove may run in a circumferential direction relative to the central axis. The internal diameter dn may be larger than the diameter d. | 04-16-2015 |
20150013625 | REMOVING OF BLOW-BY GAS OUT OF CRANKCASE WITHOUT AUXILIARY DRIVE - The present disclosure refers to a blow-by gas removing device for an internal combustion engine having a crankcase. The blow-by removing device may comprise an engine component rotatably driven about a longitudinal axis. A fan wheel may be fixed to the engine component such that the fan wheel rotates together with the engine component. A housing may cover at least partially the fan wheel. The housing may be provided with an outlet configured to be connected to an oil separating device. The fan wheel and the housing may be configured in a manner that blow-by gas saturated with oil is being sucked off from the crankcase and discharged through the outlet. Further, the present disclosure refers to a method for removing blow-by gas of an internal combustion engine without an auxiliary drive for a fan. | 01-15-2015 |
20140182288 | Device and method for regulating a spark-ignition gas engine - A protective device for a spark-ignition gas engine is provided, which engine has a throttle valve for controlling a gas/air mixture and has an exhaust-gas turbocharger with a turbine that is associated with a throttle member for exhaust gas. A detection unit is configured to detect an actual differential pressure across the throttle valve, and a control unit is configured to change the position of the throttle member based on the actual differential pressure. The throttle member for the exhaust gas is provided only downstream of the turbine in relation to the flow direction of the exhaust gas. A method for regulating an exhaust-gas throttle member, connected downstream of a turbine of an exhaust-gas turbocharger, is also disclosed. | 07-03-2014 |