Abstract: A combustion-engined setting tool for driving fastening elements such as nails, bolts, pins and the like in a constructional component, includes a combustion chamber (14) having an axially displaceable wall (14) displaceable over at least one guide (29) arranged in the combustion chamber (14) by a press-on element (30), a guide cylinder (12) adjoining the combustion chamber (14) and in which a setting piston (11) is displaceable for driving the fastening elements in the constructional component, and a lever drive (20) operatively connecting the press-on element (30) with the displaceable wall (17) for displacing the same in accordance with a transformation ratio between a press-on stroke and a displacement stroke of the displaceable wall (14).

Abstract: An internal combustion engine has a cylinder block defining a cylinder. A piston is disposed in the cylinder. The internal combustion engine has a connecting rod connected to the piston and a crankshaft connected to the connecting rod. The internal combustion engine has a vcr mechanism connected to the crankshaft. A first gear is connected to the crankshaft, and a second gear is in mesh with the first gear. The second gear is connected to the vcr mechanism. The internal combustion engine has a third gear in mesh with the second gear. The third gear has a fixed center of rotation.

Abstract: Disclosed herein is an LPI engine system. The LPI engine system of the present invention directly injects LPG fuel under high pressure into an intake system of an engine through an injector and precisely controls the injection rate of LPG fuel through the control of the injector, thus improving the fuel consumption ratio and power performance of a vehicle, enhancing the startability of the vehicle in the winter, and making maintenance addressing the buildup of tar after combustion unnecessary. Furthermore, in the LPI engine system of the present invention, the injector, which adjusts the injection rate of LPG fuel into the intake system of the engine, includes a path shutoff part which functions to controls an LPG fuel injection path depending on an operational state of the engine, thus preventing LPG fuel from leaking into the intake system of the engine through the injector when the engine is in an ignition OFF state.

Abstract: A reciprocating internal combustion engine is based on Homogenous Charge Compression Ignition (HCCI) that occurs in a deformable, resonant combustion chamber and that is coupled mechanically to efficient, resonant, electro-mechanical transducers acting as motors and generators. The mechanical coupling also implements fuel/air intake valves and exhaust valves. Embedded sensors allow an electronic control system to start the engine and thereafter to maintain operational configuration of the moving components in response to the effects of imperfect mechanical fabrication and/or assembly and dynamic changes in mechanical properties of the materials with run-time temperature and engine life.

Abstract: A cooling system for an internal combustion engine mounted within a vehicle includes a radiator for rejecting heat to ambient air and an axial fan mounted within a fan shroud associated with a radiator. The fan has a stationary hub equipped with louvers which may be controlled so as to either block off or allow airflow through the hub, and consequentially through the radiator. In this manner, the airflow past the fan may be greatly increased when the vehicle is operated at a higher groundspeed, while decreasing the amount of power consumed by the fan.

Abstract: A multi-use gasket assembly includes at least two lobes each having a fluid-conveying opening with an associated axis. Four mounting holes are formed in each of the lobes about the openings. The gasket has symmetry across a plane of symmetry containing the axes of the openings.

Abstract: An intake box having an appropriate size to reduce intake noise is mounted at an upper portion of an engine by using the structural feature of a V-type engine, thereby minimizing the intake noise. The cross-sectional area of a relative intake passage is further expanded to decrease the intake resistance, resulting in an improvement of the engine output.

Abstract: A lubricant supply system for a marine engine is provided with a lubricant conduit that is formed within an engine block in close proximity to a coolant conduit. The coolant conduit is extended, by a bulge, in a direction toward the lubricant conduit in order to reduce the distance through which heat must travel through the base material of the engine block to cool the lubricant flowing through the lubricant conduit by the water flowing through the coolant conduit.

Abstract: A control system and method for balancing output and exhaust emission values of the various cylinders of an engine having individual cylinder fuel delivery control. Selected output and emission related values for one cylinder, selected as a base cylinder, are compared to the same values for the other cylinders, and fuel injection quantity and timing (or another combustion phasing variable) are adjusted in the other cylinders to output and emission values of the base cylinder. The adjustments are weighted based on the degree to which changes in both the injection quantity and timing (or other variable) influence changes in both the output and emission values as determined from the sensed readings of pressure sensors in each of the cylinders.

Abstract: A primary housing for a motorcycle engine includes an inner housing that defines internal coupling apertures, transmission coupling apertures, and external coupling apertures. Internal fasteners extend through the internal coupling apertures and the transmission coupling apertures to couple the inner housing to the crankcase and the transmission. An outer housing defines coupling apertures that align with the external coupling apertures and fasteners extend through the coupling apertures, through the external coupling apertures, and into the engine crankcase to couple the inner and outer housings to the crankcase. A resonant damping device is rigidly or moveably coupled to an anti-node region of the outer housing to reduce noise emissions from the outer housing during engine operation.

Abstract: A combustion engine comprising; a pair of opposed cylinder elements (2, 3) having a common axis, each cylinder element being provided with a piston (28) reciprocable between first and second locations in the cylinder element the first and second locations respectively representing compression and expansion elements of the piston stroke, each piston having a forward side and a rear side; a combustion chamber (38) for each cylinder element comprising the forward side of the piston (28) and the walls (2) of the cylinder element; combustible gas compression means (37b, 37c) for each combustion chamber; supply passage means (41) arranged to deliver combustible gas to each combustible gas compression means; an induction chamber (37a) for each piston arranged to receive compressed combustible gas from the combustible gas compression means; transfer passage means (39) for directing compressed gas from each induction chamber to the respective combustion chamber, and cam means (13) rotatable about the common axis the c

Abstract: A rocking mechanism through which linear reciprocating movement of a piston of an internal combustion engine can be transferred, from the remote end of a connecting rod on which the piston is mounted, to a crankshaft. The mechanism includes a rocking member; mountings by which the rocking member is mountable in relation to the crankcase for the engine, for reversible rocking movement on a first axis (X1); a link member pivotally connected at one end to the rocking member so as to be pivotable relative to the rocking member on a second axis (X2) between two extreme positions; and a holding device.

Abstract: A feed pump 28 that is driven by the axial torque of an internal combustion engine 10 is installed. An electric scavenge pump 36 is installed. A base value for the ratio (S/F ratio) between the discharge volume of the scavenge pump 36 and feed pump 28 is calculated. The base value is corrected so that the S/F ratio is lower in a region where the engine speed is high than in a region where the engine speed is low. The discharge volume of the scavenge pump 36 is controlled in accordance with the S/F ratio that is corrected in the above manner.

Abstract: An integrated cam drive and oil pump assembly for motorcycle engines includes an oil pump body, which is connected with the engine crankcase, and has an oil passageway with a pump outlet portion communicating with an oil reservoir. A pinion gear is positioned in the interior of the oil pump body, is connected with the engine drive shaft for rotation therewith, and mates with an idler gear. A first cam drive gear is mounted on a first camshaft, and mates with the idler gear. A second cam drive gear is mounted on the first camshaft in an axially spaced relationship with the first cam drive gear. A third cam drive gear is mounted on a second camshaft, and mates with the second cam drive gear.

Abstract: A method for reversing the direction of rotation of a two-stroke engine whose rotational speed and crank mechanism position are sensed by a sensor system. To reverse the direction of rotation of the engine, the ignition and/or the fuel supply is first switched off, and upon a subsequent coasting of the engine, a targeted early ignition is set when a specific limiting rotational speed is undershot and after, if appropriate, the fuel supply has been resumed. Early ignition reverses the direction of rotation of the engine, and the fuel supply and ignition are subsequently controlled in accordance with the reversed direction of rotation. A single sensor interacts with an incremental transducer having a specific number of transducer segments distributed uniformly over a circumference to determine the instantaneous angular speed of the crank mechanism and the crank mechanism position.

Abstract: A coolant temperature of coolant in a circulation line system is measured through a coolant temperature sensor and is controlled by controlling a flow rate control valve. The flow rate control valve is diagnosed to determine whether abnormality of the flow rate control valve exists based on behavior of the measured coolant temperature, which is measured through the coolant temperature sensor during a warm-up period of an internal combustion engine.

Abstract: A cooling system for enhanced variable cooling of internal combustion engine having a multi-speed water pump connected to an internal combustion engine for pumping conventional refrigerant. A radiator is connected to the multi-speed water pump and is in fluid communication with the multi-speed water pump. A first electronic expansion valve is connected to the radiator and is in fluid communication with the radiator. The electronic expansion valve is for metering the conventional refrigerant. A fresh air intake cooler is connected to the first electronic expansion valve and is in fluid communication with the first electronic expansion valve.

Abstract: A compression ignition engine (10) has a control system (24) for processing data, one or more cylinders (16), a fueling system (18), and a variable valve actuation mechanism (20). Control system (24) develops both fueling data for fueling the engine and timing data representing time during the engine cycle for intake valve closure to a cylinder that will endow the cylinder with an effective compression ratio (ECR) appropriate to current engine operation for causing auto-ignition to occur near or at top dead center in the engine cycle. During a compression upstroke, the cylinder is fueled according to the fueling data and intake valve closure for the cylinder is performed according to the timing data. This creates an air-fuel mixture that is increasingly compressed to the point of auto-ignition near or at top dead center.

Abstract: A two-stroke engine having both a direct injector and an indirect injector. The direct injector injects fuel into the cylinder without passing through the crank case. The indirect injector is in fluid communication with the crank case. It provides fuel delivery through the crank case and through a transfer channel to the cylinder. A controller is coupled to the direct injector and to the indirect injector. The controller starts, stops, and varies the fuel delivery of each injector. The controller is programmed to increase the fuel delivery of the indirect injector at a predetermined engine speed. The controller maintains primary fuel flow through the direct injector below a predetermined engine speed. The controller varies the fuel delivery based on at least one of following: engine speed, throttle position, exhaust valve position, intake air temperature, exhaust temperature, barometric pressure, coolant water temperature, and piston position.

Abstract: A crankcase scavenged two-stroke engine includes a piston reciprocably mounted in a cylinder. The cylinder wall has an exhaust port and a rear transfer port opposed thereto formed in it. The rear transfer port communicates with the interior of the crankcase via a rear transfer passage and is arranged to open before the exhaust port closes, whereby, in use, the cylinder is scavenged. An inlet duct is arranged to supply combustion air to the crankcase and a throttling valve is arranged to throttle the flow of air through the inlet duct. A carburettor is arranged to supply fuel into the inlet duct. The interior of the crankcase is divided into at least two separate crankcase volumes, a rich volume (V1, V2) and a lean volume (V3). Each crankcase volume communicates with the cylinder via a respective hole in the crankcase wall. The cylinder wall also has at least one lateral transfer port formed in it at a position between the rear transfer port and the exhaust port.