Abstract:
A high-pressure pump (8) for providing a pressurized supply of fuel in an engine furnished with a common rail type fuel injection apparatus is provided with two actuators (88, 89). Of these actuators (88, 89), one (88) is stopped and the operation for providing a pressurized supply of fuel is performed from only the other actuator (89), so that the timing at which the load torque that acts on the crankshaft of the engine becomes a local maximum and the timing at which the load torque that acts on the driveshaft of the high-pressure pump (8) becomes a local minimum are made to coincide with one another.
Abstract:
Constant pressure internal combustion engine having compression and expansion chambers of variable volume, an elongated combustion chamber of substantially constant volume between the compression and expansion chambers, and a fuel inlet for introducing fuel into the combustion chamber where it mixes with compressed air from the compression chamber to form a mixture of fuel and air that burns as it travels through the combustion chamber. The pressure remains substantially constant within the combustion chamber over a wide range of operating and load conditions.
Abstract:
A system for controlling fluid flow to or from at least one cylinder of an internal combustion engine is disclosed. The system includes a rotary valve. A cylinder head having a valve chamber accommodates the rotary valve. The rotary valve is arranged to selectively open or close a flow opening in the cylinder head. A drive motor is coupled to the rotary valve to impart rotation thereto.
Abstract:
A timing belt system for an air cooled Twin Cam V-Twin motorcycle engine is provided. The timing belt system includes a crankshaft pulley assembly including a crankshaft pulley affixed to the crankshaft and a pulley flange affixed to the crankshaft pulley. The timing belt system also includes a camshaft pulley assembly including a spider gear having spindle affixed to the rear cam end of the Twin Cam engine and a hub having slotted apertures fastened to a camshaft pulley fastened. A timing belt having teeth is connects the crankshaft pulley to the camshaft pulley to turn the camshafts in synchronized rotation with the crankshaft. The spider can be rotated relative to the camshaft pulley and fastened thereto using bolts extending through the slotted apertures to Advance or Retard the timing of the camshafts relative to the crankshaft.
Abstract:
In a camshaft adjusting device including a positioning actuator for adjusting a phase position of a camshaft with respect to a crankshaft of an internal combustion engine, wherein the camshaft is driven by the crankshaft via a drive input, and a base drive torque of the camshaft is provided by a positioning actuator, a spring element is arranged between the camshaft and the crankshaft and has a spring torque selected so as to compensate for at least part of a mean load torque of a load unit connected to the camshaft to be driven thereby and at most only a part of the base drive torque.
Abstract:
Constant pressure internal combustion engine having compression and expansion chambers of variable volume, an elongated combustion chamber of substantially constant volume between the compression and expansion chambers, and a fuel inlet for introducing fuel into the combustion chamber where it mixes with compressed air from the compression chamber to form a mixture of fuel and air that burns as it travels through the combustion chamber. In some embodiments, the combustion chamber is folded back upon itself and has a rough, twisting interior side wall, with long, sharp protrusions extending inwardly therefrom and forming hot spots which help to provide complete combustion of the fuel mixture throughout the combustion chamber. These protrusions, together with flow turbulators within the chamber, promote complete mixing and, hence, combustion of the fuel and air in the combustion chamber.
Abstract:
A centrifugal advance mechanism has drive and driven members connected with one another to rotate about a common axis as they move toward and away from each other along the common axis. A resilient element biases the members toward each other. A ramp on one of the members has an inner end portion and an outer end portion. The inner end portion is closer to the common axis than the outer end portion, the ramp rising as it moves from the inner end portion toward the outer end portion. A bail contacts the ramp and the other member. The resilient element biases the ball down the ramp, the ball traveling radially outward and up the ramp as the members rotate at increasing angular velocity thereby causing the members to separate from each other against the bias of the resilient element and to rotate with respect to each other.
Abstract:
A vertical internal combustion engine E is incorporated into an outboard motor or the like. The vertical internal combustion engine E includes a crankshaft 18 enclosed in a crank chamber 20, and a belt-drive transmission mechanism 50 including a rubber belt 53 for transmitting power of the crankshaft 18 to a camshaft 24, and held in a belt chamber 63. The belt chamber 63 is isolated from the crank chamber 20 by a lower case 61 of a transmission case 60 holding the belt-drive transmission mechanism 50 therein such that the flow of an oil-containing gas from the crank chamber 20 deviates from a direction toward the belt 53. The belt 53 is lubricated with oil injected concentratedly into the belt chamber 63 through jet nozzles 80 disposed in the belt chamber 63. Thus the excessive exposure of the belt 53 to the oil-containing gas from the crank chamber can be avoided, the life of the belt can be extended and the belt is lubricated properly.
Abstract:
Traction mechanism drive for an internal combustion engine, having a crankshaft gear wheel, at least one gear wheel which is arranged on a driven shaft, a wrap-around means and an electric machine which can be actuated in order to reduce rotational non-uniformities, the electric machine (9, 10) having a rotor (12) which is arranged on the or a camshaft (1, 11) and interacts with an immobile stator (15).
Abstract:
A valve train for an internal combustion engine that uses motors to open/close intake valves of cylinders. The motors drive the intake valves for each of a plurality of groups of cylinders that perform an explosion stroke at substantially equal crank angle intervals. Since the intake valves are driven for each of the plurality of groups of cylinders that perform an explosion stroke at substantially equal crank angle intervals, the explosion stroke is performed regularly even when an operation is conducted with only a particular group of cylinders. This makes it possible to inhibit driveability deterioration.