摘要:
The injection fuel system employs a hydraulically operated piston for pressurizing and expelling a primary fuel suspension through an injection valve into the combustion chamber. A high pressure piston pump which is driven off the camshaft delivers diesel oil to operate the piston. In addition, the high pressure piston pump provides pressurized diesel oil to open and close the injection valve for the primary fuel during an injection phase and also supplies pressurized diesel oil to operate the injection valve for the ignition oil. The hydraulically operated piston can be adjusted in dependence upon the speed of the engine with a corresponding adjustment in the pressure used to regulate the injection valve for the ignition oil.
摘要:
The powdered fuel is dosed in metered amounts by a pocketed dosing wheel into a fuel-feeding duct which is opened and closed by reciprocally mounted slider. Air is charged into the fuel feeding duct via a compressed air duct above the fuel valve. Upon opening of the fuel valve, a blast of air is charged via a control valve into the compressed air duct to expel the powdered fuel in the fuel-receiving chambers of the fuel valve.
摘要:
A powdered coal air suspension is charged from a rotating drum via a switch means into a vertical channel which is sealed off from a powdered coal collector in the valve piston by an axially hollow slider. Downward movement of the slider allows the powdered coal to charge into the valve piston while an air valve within the vertical channel opens when the valve piston opens to create an air blast for expelling the coal and air into the combustion chamber.
摘要:
The fuel injection system for a multi-cylinder reciprocating internal combustion engine employs an accumulator in the feed line between a feed pump and each of two hydraulic pumps of hydraulic pump pairs. In addition, a high-pressure accumulator is connected on the delivery side in common to all of the hydraulic pumps to eliminate pressure variations. The pumps of each pair of hydraulic pumps are driven in a 45.degree. out-of-phase relation to each other while the adjacent pairs of hydraulic pumps are driven in co-phase relation.
摘要:
A resiliently prestressed oscillatory system having two discrete operative positions is located by means of toggle levers in the limit positions of the oscillation. One of the toggle levers is in the extended state in the associated operative position and is deflected by a control device through the agency of a movable abutment until the self-locking of the toggle lever is overcome and a prestressed spring drives the system into its other end position.The toggle levers form an amplifier reducing, for instance, by a hundred-fold to a thousand-fold, the forces which the control device is required to provide. The system can therefore be controlled directly by means of an electronic control without the need for additional pneumatic of hydraulic auxiliary systems or high power electrical systems.
摘要:
Liquified coal fuel is maintained in a liquified state by surrounding the injection pump, injection nozzle, suction line, pressure line and overflow line with jackets through which a heating medium is passed. The jackets surrounding the suction line, overflow line and pressure line are corrugated for expansion and are connected via bellows-like sealing bodies and flanges to the jacket surrounding the pump housing. Outlets are provided for leakage and are connected to separators to remove the fuel from the heating medium.
摘要:
The nozzle in the cylinder head is supplied with solid particulate fuel, e.g. powdered coal, via a dosing wheel while a hollow slider in the nozzle blocks a supply of compressed air. After dosing, the hollow slider is moved into a position to block further entry of the particulate fuel while opening the nozzle to the compressed air supply. The fuel is then blasted out of the discharge openings of the nozzle into the combustion chamber of a cylinder.
摘要:
The valve piston is charged with powdered fuel, such as coal, which is initially metered into a fuel transfer channel during a downward stroke of a dosing and ejecting member and then blown via compressed air through the valve piston into the combustion chamber upon completion of the downward stroke of the dosing and ejecting member. A slider is used to allow metering of the fuel without interference from the compressed air. After the fuel charge is metered, the slider moves transversely of the transfer channel to permit entry of the compressed air so that the charge can be blown into the combustion chamber via the valve piston.
摘要:
The device comprises a cylinder (3) and a piston (7) which is guided free of contact relative to the cylinder (3). A gap seal (12) is provided between the lateral surfaces (15, 14) of the cylinder (3) and of the piston (7). The gap seal (12) has a very thin and uniform annular cross section. The lateral surfaces (14, 15) of the cylinder liner (4) and of the piston (7) are essentially smooth and comprise a material with a linear thermal coefficient of expansion which is lower relative to steel. The precise maintenance of the sealing gap and the central guidance of the piston (7) in the cylinder liner (4) is ensured through two guides (8, 9) connected rigidly with the housing (5). These guides (8, 9) are elastic in the direction of the central axis (2) of the piston-cylinder unit and highly rigid transversely to the central axis (2). The arrangement formed with the aid of these guides (8, 9) of a gap sealing between piston (7) and cylinder (3) with minimum gap is free of contact and no abrasion of sealing material develops wherein the motions of the piston (7) are guided precisely centrally to the cylinder (3).
摘要:
The device permits the precise guiding and centering of machine elements, for example of a piston rod (7) or a piston (3,4) in a cylinder (5,6). Therein two guides (11,12) are disposed at approximately right angles to the longitudinal axis (2) of the piston rod (7) and at a distance from each other. Each guide (11,12) comprises several spring elements (15) which extend radially from the axis (2). The spring elements (15) comprise long main spring parts (16) and short auxiliary spring (17). The spring parts (16,17) are rigidly connected one with the other via connection parts (18). The guides (11,12) have with respect to the axis (2) high transverse rigidity and permit precisely guided oscillating motions of the machine elements (3,4,5,6,7) along the longitudinal axis (2). These guides (11,12) permit for example the contact-free relative motions between piston (3,4) and cylinder (5,6) and have a high service life and operational reliability.