摘要:
A device for transmitting a deflection of a piezoelectric actuator to a movable tappet includes a pressure chamber between the piezoelectric actuator and the tappet. The pressure chamber is substantially formed by two mutually parallel diaphragms having effective radii of different lengths. The diaphragm with the longer radius is associated with the piezoelectric actuator and the diaphragm with the shorter radius is associated with the tappet. Therefore, upon a deflection of the first diaphragm by the piezoelectric actuator, the second diaphragm is deflected by a greater distance toward the tappet. A controller with an actuator having a controllable length is also provided.
摘要:
A mechanical force transmitter converts the deformation of a piezoelectric actuator into a linear movement of a final control element. The transmission is via configuration of two mutually inclined working surfaces and a movable mechanical element disposed between the inclined working surfaces.
摘要:
An internal combustion engine with a noise-suppressing encapsulation has a drive wheel for auxiliary units which is driven by the crankshaft of the engine and arranged outside the encapsulation. The drive wheel consists of two concentric parts which are connected via at least one elastic member. The inner part of the drive wheel has cooling air ducts which extend from inlet ends on the side opposite an opening in the encapsulation wall to a exit ends on the side adjacent the opening, the exit ends being spaced a greater distance from the axis of rotation than the inlet ends, although still lying within the noted opening. Thus a blower is provided in the form of a centrifugal pump. A cover is connected to the outer part of the drive wheel which covers the inner part and has sound-isolated suction openings for the cooling air.
摘要:
An internal combustion engine having a noise suppressing encapsulation, said encapsulation being ventilated by a blower and cooling air ducts being formed within the encapsulation by means of partitions, one of said cooling air ducts comprising all fuel and oil leading engine parts and the other cooling air duct being imperviously divided from the first one comprising the parts of the exhaust system.
摘要:
The fuel injection pump having a pump piston, which has a forward segment and a rear segment of larger diameter The pump piston operates in a cylinder bore with two bore segments of different diameters, corresponding to the pump piston diameters. In the forward bore segment, the forward piston segment defines a pump work chamber, which can be made to communicate with a fuel reservoir via an electrically actuated valve. The rear segment and the rear piston segment of defines an annular work chamber, which communicates with a fuel conduit and a distributor body communicates, in an intake stroke of the pump piston, with a fuel-filled suction chamber. In the supply stroke of the pump piston, the piston work chamber is reduced in size and fuel is positively displaced from the piston work chamber and pumped into the fuel reservoir. In the intake stroke of the pump piston, the pump work chamber is filled from the fuel reservoir. From the pump work chamber, in a known manner, fuel is pumped to the injection locations via a distributor groove in the pump piston and via pressure conduits provided in the distributor body in a number corresponding to the number of engine cylinders.
摘要:
In an internal combustion engine with two or more cylinders and two inlet valves per cylinder, in which the intake passages of two adjacent cylinders, which lead towards the inlet valves, are located side by side, symmetrically relative to the symmetry plane of the two cylinders, and in which the cylinder head is made in one piece and has one common inlet flange with an inlet channel, which is flow-connected, past a lug receiving one of the cylinder head studs, with the intake passages formed by guiding surfaces and leading towards the individual inlet valves, the intake passages leading to the inlet valves positioned at a lesser distance in the direction of flow are guided on one side of the lug and the intake passages leading to the inlet valves positioned at a greater distance are guided on the other side of the lug, and the inlet valves of the adjacent cylinders are controlled in such a way that the cylinders are fed with combustion air at different points in time.
摘要:
In an internal combustion engine comprising a crankshaft (7) and crankshaft main bearings (6), an engine unit support (1) which supports the crankshaft main bearings, and a cylinderhead (3) mounted on the engine unit support (1), which are engine parts directly affected by body resonance and sound vibration, at least one vibration absorbing and power transmitting element (15) located between the engine parts directly affected by sound vibration and the crankcase (8), a sealing element (21) located in a joint between a engine unit support (1) and the crankcase (8) which seals an encapsulated upper dry engine region oil-tightly against a lower oil-wetted engine region (22), an elastic filling element (19) bridging at least a part of the joint being inserted into the joint before the mounting of the sealing element (21) and supporting the latter, whereby the sealing element (21) comprises a viscous material forming an adhesive compound with metal which is resilient after curing. Thus, the rubber material of the vibration absorbing elements (15) can be chosen without regard for the oil-resistance and customary vibration absorbing elements can be used without a specific adaption. Furthermore, this arrangement of the sealing element does not require a specific machining of the surfaces lying close to the sealing element.
摘要:
A cylinder head (1) for an internal combustion engine, the cylinder head (1) having a top face (1a), a bottom face (1b) arranged to be connected to a cylinder block, a lateral exhaust flange face (1c) arranged to be connected to an exhaust manifold (17), a second lateral face (1d) being opposed to said lateral exhaust flange face (1c), a front face (1e) and an end face (1f).
摘要:
In order to improve in a simple manner the ventilation of a water-cooled internal combustion engine having a sound-absorbing cover, a suction device is provided at the air inlet opening of the cover, the suction device containing a suction port in the low pressure area of the radiator/fan assembly. By specific placement of several air inlet openings a variety of cooling requirements may be met.
摘要:
A ventilation system for an encapsulated internal combustion engine providing a reduction in short-circuit air flow from the pressure side to the suction side of the ventilation radial fan.