Abstract: A compound engine including a gas turbine unit and a two-stroke uniflow scavenge piston unit having a hollow cylindrical exhaust valve mounted concentrically with an associated piston to form a portion of the combustion chamber within a peripheral wall of the exhaust valve. A double acting exhaust valve actuator is responsive to rotation of the crankshaft and is operatively coupled to the peripheral wall of the hollow cylindrical exhaust valve to produce forces derived directly from rotation of the crankshaft to open and close the exhaust valve. The actuator is a camshaft having two sets of cams which drive a cam follower in response to rotation of the crankshaft.

Abstract: A compound engine that includes a gas turbine unit and a piston unit wherein a portion of the cycle air for the piston unit is diverted through cooling passages to provide impingement cooling of several areas of the piston unit including the upper cylinder area, the outer and inner surfaces of the exhaust valve and other selected areas of the cylinder head; and there after, the diverted cycle air is reintroduced into the cycle.

Abstract: A display device for illustrating the internal construction of a conventional bedding system displayed on the sales floor of a store is adapted to be superposed on a corner of the displayed bedding system. The novel display device comprises three generally-planar members, one planar member corresponding with the horizontally-disposed body-receiving surface of the mattress and the other two generally-planar members corresponding to the two side surfaces of the bedding system forming the corner on which the display device is superposed. On each of the three generally-planar members of the device is a different picture, each picture portraying the likeness of the individual components of the innerspring assembly of the mattress on which the display device is superposed in such a way that these likeness simulate in two dimensions the structures and arrangement of the corresponding components in the innerspring assembly of the mattress.

Abstract: An exhaust gas turbocharger for a supercharged internal combustion engine, in which the exhaust gas turbocharger includes at least one turbine and at least one compressor and the turbine has a turbine casing with a spiral-shaped flow guide duct, a turbine wheel, an inlet end and an outlet end and the compressor includes a compressor casing with a diffuser duct, an impeller, a pressure side and a suction side and the turbine wheel and the compressor impeller are mounted on a common shaft and the turbine casing and the compressor casing, together with a bearing housing, an exhaust gas turbocharger casing and define a gas conduit connection between the inlet end of the turbine and the pressure side of the compressor with at least one control valve and a gas delivery device arranged in the gas conduit connection for controlling the flow of gas between the inlet end of the turbine and the pressure side of the compressor.

Abstract: A novel turbocharger is disclosed that includes a compressor wheel and two turbine wheels all mounted on a common drive shaft. Also included is an auxiliary airflow generator to turn one or both turbine wheels. In normal operation, engine exhaust is used to drive the compressor wheel. The improved turbocharger uses two turbine wheels to drive one compressor wheel on one common drive shaft, which invention is intended to eliminate the turbo lag problem inherent in a single turbine turbocharger. In one embodiment, the auxiliary airflow generator spins the turbine wheel at low engine speeds to overcome the problem of turbo lag. In one embodiment, the airflow generator is a blower fan, which directs air through the turbine. In another embodiment, the airflow generator is a vacuum generator, which impels air through the turbine wheel. The two embodiments may be combined such that the blower and the vacuum generator compliment each other in operation.

Abstract: A low-cost, lightweight mobile gas turbine capable of rotating in excess of ne hundred thousand RPM is coupled to a centrifugal air compressor which supplies high volume airflow to a diesel fueled combustion chamber for supplying hot gas to the turbine. Three energy outputs are obtained in the form of pressurized airflow, hot gas flow and large volumes of directed ambient air. The hardware components are essentially state-of-the-art, but their combination for use in multi-purpose military combat operations has not heretofore been known. Such uses include smoke generation, dissemination of infre-red and radar absorbant clouds, decontamination of large masses, hot water supply and air pressure source for mechanics tool operation.

Abstract: Heretofore, auxiliary air was directed to a particulate filter assembly of a supercharged diesel engine for proper regeneration thereof by a relatively large auxiliary air compressor, or alternatively from a take-off duct communicating with the inlet manifold of the diesel engine. The former solution often requires a governed compressor for improved efficiency and is expensive, and the latter does not provide satisfactory regeneration throughout the full operating range of the engine.

Abstract: A heat feeding apparatus employable for an internal combustion engine having a supercharger attached thereto, the apparatus including a compressed air bypass passage opening/closing valve disposed midway of a compressed air bypass passage by way of which the outlet of a blower is communicated with the inlet of a turbine in the supercharger and combustion means installed in an inlet region of the turbine, wherein opening or closing of the compressed air bypass passage opening/closing valve and combustion in the combustion means are initiated in dependence on the temperature of a specific kind of medium for which heat exchanging is effected in a heat exchanger, whereby a heat involved in the exhaust gas is transmitted to the heat exchanger in dependence on the demand required by the medium.

Abstract: The primary zone (1) of the auxiliary combustion chamber has a shape of revolution about an axis (X--X) and is defined by a flame tube (2) which is of cylindrical and/or frustoconical shape, coaxial with said axis (X--X), smooth and devoid of air supply orifices of notable section, and by the chamber inner end (3) which is movable in a direction parallel to said axis (X--X) and cooperates with a fixed seat (13) rigidly connected to the flame tube (2) and separating the primary zone (1) from a cavity (4) so as to constitute, with the chamber inner end (3), throttling means (31) which have a variable passage section and are constituted by a sleeve (10) rigidly connected to a balancing piston (11), which sleeve and piston are coaxial with said axis (X--X), the balancing piston (11) being slidable in a cylindrical bearing surface (12) rigidly connected to the walls of the cavity (4).

Abstract: A turbocharger-gas turbine for an internal combustion engine operable in multiple modes in a manner reducing heat losses. The turbocharger-gas turbine includes a compressor for delivering compressed air to the internal combustion engine. The compressor has a compressor housing defining an air flow path leading from an air inlet to an air outlet at opposite ends thereof. The air outlet of the compressor is in communication with an air inlet of the internal combustion engine to deliver compressed air thereto. The turbocharger-gas turbine also includes a turbine for driving the compressor to compress air for delivery to the internal combustion engine. The turbine has a turbine housing defining a gas flow path leading from a gas inlet to a gas outlet at opposite ends thereof. The gas inlet of the turbine is in communication with the gas outlet of the internal combustion engine for receiving gas therefrom.

Abstract: The present invention relates to a method for controlling the working cycle of a four-stroke internal combustion engine which is supercharged by at least one exhaust-driven turbo-compressor (4), and also to an arrangement for carrying out the method. Each cylinder of the engine is provided with an inlet valve (2) to which the compressor (5) of the turbo-compressor (4) delivers air through an inlet pipe (6), and also with an outlet valve (3) from which gases are passed from the cylinder to the turbine (7) of the turbo-compressor (4) through an outlet pipe (8). According to the invention each cylinder is further provided with a pressure control valve (9) which is connected to the outlet pipe (8) by a pressure control line (10), between the outlet valve (3) and the turbine (7) of the turbo-compressor (4).

Abstract: A prime mover comprises a positive displacement engine (100), such as a reciprocating or rotary piston engine, which is linked to a turbine/turbocompressor set, such as the gas turbine engine (102). The exhaust gases of the positive displacement engine pass through a duct (122) to drive the turbine (134) which drives the turbocompressor (106), which in turn turbocharges the positive displacement engine (100) through a duct (108). Disclosed are efficient overall operating cycles for such prime movers, advantageous adaptations of prime movers capable of performing such operating cycles, and operating cycles for the positive displacement engine (100) which enable it to contribute most effectively to the efficiency of the overall operating cycles.

Abstract: In a diesel engine (1) supercharged by an exhaust gas turbocharger, both the compressor (4) and the turbine (3) of the supercharger are designed for full engine power and speed. A by-pass duct (8) provided with a non-return valve (9) and a control device (10) is connected between the exhaust gas duct (9) and the boost air duct (5). The turbine (3) is equipped with means (11, 12, 13) for varying the turbine equivalent cross-section. At part load, the equivalent cross-section and, simultaneously, the by-pass duct cross-section are varied in order to operate as near as possible to the surge limit of the compressor (4).

Abstract: In an engine (1), supercharged by a turbocompressor unit and provided with a bypass pipe (14), the exhaust gas manifold (13) of the engine has a small and constant section, the junction between the bypass pipe (14) and the gas inlet (11) of the turbine (5) is located upstream of the first junction (18) between the manifold (13) and pipes (12) connecting the work chambers (2) of the engine (1) to the manifold (13) and the bypass pipe (14) includes throttling means (15) which are such that the difference between the total pressures prevailing directly in the outlet (7) of the compressor (6) and upstream of the turbine (5) substantially only depend on the first of said pressures.

Abstract: A diesel engine, in particular an aircraft engine with an exhaust gas turbocharger, which comprises a compressor and a turbine, wherein for the engine (1) a compressed air starter (20), for the engine (1), is provided whose exhaust air (31, 31') is directed via the turbocharger (4) into the combustion chamber of the engine (1).

Abstract: An arrangement of interrelated automatically responsive accesories for an Otto type internal combustion engine wherein an exhaust driven turbine rotor housing is directly connected to the engine exhaust manifold outlet, with the full exhaust flame kinetic energies impinging with full maximum velocity-thrust force against the turbine rotor vaning, at a flow rate variously intensified by the volumes of oxygen and hydrogen gases being fed to the engine intake in accordance to engine speed and load conditions may determine.

Abstract: In a supercharged marine diesel engine having at least one exhaust-gas turbocharger (6, 7) and a separate utility turbine (12) which is connected in parallel with the supercharging turbine (7) and delivers power, and having at least one auxiliary diesel engine (10) which is supercharged by means of a turbocharger and which drives a synchronous generator (11) supplying the ship's electrical system with electrical energy, the utility turbine (12) is coupled to a free shaft end of the auxiliary diesel/generator unit (10, 11). In this way, the auxiliary diesel engine (10) can be relieved of load, which results in a considerable fuel saving. In order to maintain a positive scavenging gradient when the auxiliary diesel engine (10) is relieved of load, a small portion of the exhaust gases of the marine diesel engine (2) is conveyed to a point upstream of the supercharging turbine (19) of the auxiliary diesel engine (10).

Abstract: In a multi-cylinder internal combustion engine having fuel injection, in particular a turbo-engine, having air intake and exhaust gas conduits, a turbocharger and a regulating valve for furnishing combustion air to the exhaust gas conduit when the throttle valve in the air intake conduit is closed partially or entirely, in order to maintain the charge pressure of the turbocharger during overrunning or at partial load with good efficiency of the system. When the regulating valve opens, a portion of the cylinders is not ignited and the remaining portion of the cylinders is ignited at an extremely late instant of ignition, with suitable metering of the fuel injection quantity.

Abstract: A turbocharging system for an internal combustion engine improves performance and efficiency under low-speed, high-load operating conditions by adding secondary air to the exhaust gas upstream of the turbocharger. The secondary air combusts with unburned fuel contained in the exhaust gas to increase the temperature and pressure of the exhaust gas driving the turbocharger. Secondary air is added only when the exhaust gas temperature is above a prescribed temperature and the air-fuel ratio of the exhaust gas is below a prescribed ratio.

Abstract: The turbocompressor for supercharging an internal combustion engine comprises a compressor whose output is connected to the intake manifold of the engine driven by a turbine which is driven by the exhaust gases of the engine. A take-off duct brings a fraction of the airflow supplied by the compressor to the exhaust gases upstream of the turbine. The turbine comprises distributor vanes with variable setting, typically in a range of about 40.degree.. With this arrangement, the low speed running torque and the efficiency are improved, more especially in the case of traction engines.

Abstract: The turbocharging plant of an internal combustion engine includes two turbines connected in series, of which one drives the compressor and the other transfer its output to the engine mechanically. The turbines and the compressor are mounted at the same side of the engine. The turbines can be designed to handle the gas in a radially inwards directed flow, the downstream turbine being mounted at a lower level than the upstream one, and receiving the gas by way of a double volute device. A third turbine designed to handle the gas in a radially outwards directed flow may be interposed between the two first mentioned turbines.

Abstract: An internal combustion engine (1), supercharged by a turbocompressor (3), comprises a bypass conduit (11) in which is placed an auxiliary combustion chamber (14). The primary zone (13) of this chamber (14) receives fuel whose flow is determined by regulating means (20). These means (20) vary this flow in the same direction as a parameter which is a characteristic of the load of the engine (1), in particular the temperature of the gases measured in the exhaust of the engine (1) by a sensor (22).

Abstract: Each cylinder of a supercharged four-stroke internal combustion engine is provided with a multi-purpose duct which passes from the compressed air manifold to the exhaust manifold and has a short branch within the cylinder head structure leading directly downward to connect with the cylinder where a single valve is provided to admit intake air and pass out exhaust gas. The multi-purpose duct curves around in a part of a spiral above the cylinder near the branching place and enters laterally in the portion of the duct that leads off to the exhaust manifold, so that a relatively high resistance to flow keeps the pressure in the compressed air duct from being unduly diminished while flow of air bypassing the cylinder between the compressed air and the exhaust ducts serves to increase the amount of working gas in the supercharger. The duct is shaped so as to keep very low the resistance to the flow of air into the cylinder and the flow of exhaust gas out of the cylinder.

Abstract: An apparatus and method for operating a piston driven internal combustion engine having an exhaust gas turbocharger, provides for the exhaust gases of the cylinders to be conducted to an afterburner chamber and subsequently to the exhaust gas turbine of the turbocharger when the motor vehicle is coasting, i.e., when the motor vehicle and engine are being driven by the vehicle's inertia, with the ignition for the cylinders being turned off and the charging air being introduced into the afterburner chamber. The noncombusted fuel/air mixture from the cylinders is combusted in the afterburner chamber with the additional charging air to thereby bring the turbocharger to its full output for reacceleration of the engine.

Abstract: A method of operating a four-stroke cycle Diesel engine supercharged by an exhaust gas-driven turbocompressor with valve timing comprising a partial overlap of the opening periods of the exhaust and intake valves, with early intake closure and partial exhaust closure for the major part of the intake step followed by partial reopening of the exhaust and its final closure near bottom dead center after closure of the intake valve. At low and medium engine powers part of the supercharged intake air is bypassed to an end of an exhaust manifold, thereby increasing the cylinder filling factor and combustion air excess and substantially reducing exhaust valve temperature in the mid-power operating range of the engine.

Abstract: A method and apparatus for regulating a bypass flow of a turbocharged internal combustion engine is disclosed. A first preferred embodiment of the apparatus includes an air receiver which is in fluid communication with a turbocharger and an air oscillation pipe. The air oscillation pipe is in fluid communication with an inlet manifold, which inlet manifold is in fluid communication with a bypass duct and the turbocharged engine. The bypass duct is in fluid communication with the turbocharger. Pressure pulsations emanating from the engine propagate into the inlet manifold and the air oscillation pipe causing an air column within the inlet manifold and air oscillation pipe to oscillate. Periodic oscillations of the air column produces periodic pressure differences across the bypass duct, facilitating a bypass flow of air through the bypass duct.

Abstract: An internal combustion engine with several cylinders, with one or several superchargers, and with an additional compressor-drive by means of compressed gas, in which during partial load of the internal combustion engine, some cylinders operate as engine while the other cylinders which operate in the meantime as compressors, supply compressed gas for the additional compressor-drive of each supercharging aggregate that supplies the cylinder operating as combustion engine with charging air.

Abstract: An internal combustion engine having a supercharger utilizes a secondary air supply control system for purifying exhaust gas. A secondary air supply passage with a reservoir chamber is provided in the middle of an intake passage communicating with an exhaust gas passage. A check valve prevents the back flow of exhaust gas in the middle of the secondary air supply passage. The secondary air passage in another embodiment has the intake passage downstream of a compressor or reservoir chamber in communication with the exhaust passage. A suitable amount of air is supplied into the exhaust passage from the intake passage or reservoir, at high pressure via the secondary air passage and check valve.

Abstract: A combustor system for use with a turbocharged combustion engine comprises a combustor connected for continuous passage of engine exhaust gases. The combustor includes a relatively low pressure fuel injection system for atomizing fuel for combustion in a substantially vitiated atmosphere, and a fuel control system for supplying fuel to the combustor in response to engine operating conditions.

Abstract: A turbo-charged compression ignition engine having a turbo-charger (40) for supercharging the engine, a mechanism (56, 59) for controlling the timing of closing of the inlet passage (42) of the engine, and an auxiliary cam for opening the exhaust valve of the engine at a point near the bottom dead center in the suction stroke. The area of the nozzle of the turbine of turbo-charger is controllable by a rotor-type mechanism (69). A passage formed in the rotary-type mechanism opens to the downstream side of this mechanism. The passage is communicated with the inlet pipe of the engine through a passage (42a).

Abstract: An exhaust gas turbocharger has a movable control piston in a turbine casing. The piston is made up of a circular cylindrical body, subjected to exhaust gas pressure, or external pressure and a volute body. The volute body has substantially the cross section of the inlet volute space and adjusts the volume of the latter to the current exhaust gas flow in order to achieve optimum torque variation over the load range of the engine.

Abstract: A turbo-supercharging system for an internal combustion engine of a vehicle having an air brake system wherein compressed air is preferentially supplied to the air brake system and surplus air is used for supercharging the engine. The system includes an air compressor driven by the engine, an air reservoir tank for storing compressed air therein and supplying it to a turbine of a turbo-supercharger when required, and a solenoid-operated valve disposed in a conduit interconnecting the air tank and the air compressor. The solenoid-operated valve is normally held in its block position and adapted to be changed over to its communication position when air pressure in the air brake system exceeds a predetermined value.

Abstract: Outlet and inlet conduits of an internal combustion engine are united in, and carry a housing enclosing a rotor spool having one turbine and one compressor wheel. A cavity in the housing, the longitudinal axis of which is substantially parallel to a middle plane through the row of engine cylinders is adapted to receive the casing of the turbocharger, and may be designed in such a manner that the casing may be slid into the housing in the axial directions, without the housing having to be removed from the engine. Alternatively, the outlet and the inlet conduits may each, per se, be collected and form one half of the housing. The halves are brought together over the rotor spool, from both ends thereof. Resilient sealing members are preferably fitted between the two halves of the housing. A second exhaust gas turbine may be connected to the exhaust conduit from the supercharger, and may be adapted to drive at the power take-off shaft of the engine, or to drive some auxiliary.

Abstract: A combustor system for use with a turbocharged combustion engine comprises a combustor connected for continuous passage of engine exhaust gases. The combustor includes a relatively low pressure fuel injection system for atomizing fuel for combustion in a substantially vitiated atmosphere, and a fuel control system for supplying fuel to the combustor in response to engine operating conditions.

Abstract: A compound traction engine for a heavy vehicle including a high temperature adiabatic four stroke reciprocating diesel engine arranged to drive a boost compressor through a differential gear. The other output of the gear is connected through a torque converter to the output shaft. The exhaust from the engine is fed to a turbine with an adjustable blade nozzle ring and the output from the compressor is connected to the air inlet of the engine and is also connected via a valve to the same turbine. The turbine is connected via a continuously variable transmission to the output shaft. An automatic control unit has inputs from an output torque/speed sensor and a boost pressure sensor and is arranged to control the variable gear and the turbine blade ring.

Abstract: The object of the invention is to provide a low compression turbocharged diesel engine in which the turbocharger can be operated independently of the engine to power auxiliary equipment. As shown in FIG. 1, fuel and air are burned in a catalytic combustor 17 to drive the turbine wheel of turbine section 11a which is initially caused to rotate by starter motor 9. By opening flapper valve 26, compressed air from blower section 11b is directed to catalytic combustor 17 when it is heated and expanded, serving to drive the turbine wheel and also to heat the catalytic element 32 shown in FIG. 2. To start engine 10, valve 26 is closed, combustion is terminated in catalytic combustor 17, and valve 20 is then opened to utilize air from blower 11b for air driven motor 21. When engine 10 starts, the constituents in its exhaust gas react in the catalytic element 32 and the heat generated provides additional energy for the turbine section 11a.

Abstract: The engine is supercharged by two turbocharger units which are capable of being put into operation in succession and their compressors are capable of supplying air to the engine in parallel. When the turbocharger unit is not in operation, the outlet of its compressor is put in communication through a bypass passage with the inlet of its turbine by means of flaps or the like.

Abstract: In a supercharged engine, a bypass connected to the compressor delivery pipe (4) supplies the turbine with all the air which has not been absorbed by the engine. The bypass (4) is divided into a first branch which supplies combustive air to the primary region (10) of an auxiliary combustion chamber and a second branch which supplies diluting air to the secondary region of the aforementioned chamber and comprises first throttle means. The first branch has second throttle means (13) comprising coupled orifices (14, 15) formed respectively on an inner sleeve (16) and an outer sleeve (17) movable relative to one another. According to the invention, a radial clearance (a) is maintained between the sleeves (16, 17) irrespective of their respective temperatures. Third throttle means (45), having a zero minimum flow section, are provided upstream or level with the second means (13).

Abstract: An internal combustion engine supercharged by exhaust turbochargers, with the engine being provided with an auxiliary combustion chamber, the exhaust gas of which is temporarily fed to a turbine of an exhaust gas turbocharger for improving acceleration characteristics of the internal combustion engine. The combustion air for the auxiliary combustion chamber is derived from a stream of supercharging air produced by the exhaust turbocharger. At least two exhaust turbochargers are provided with compressors thereof both conveying or feeding into a supercharging air conduit, to all cylnders of the internal combustion engine. Each of the compressors are equipped on an intake side with one check valve. During an idling or partial load, the exhaust gas of the internal combustion engine is fed to only one of the two exhaust turbochargers, wherein a conveying air stream produced by this exhaust turbocharger effects an automatic closing of the check valve of the other exhaust turbocharger.

Abstract: An internal combustion engine with several cylinders and with one or several supercharging aggregates, in which at partial load of the engine, some cylinders operate as engine while the remaining cylinders, operating in the meantime as compressor, supply compressed gas to the turbine of a further supercharging aggregate whose compressor is connected in series with the compressor of that supercharging aggregate which supplies the cylinders operating as engine with supercharging air.

Abstract: Improved exhaust gas recirculation systems for turbocharged gas engines that include an exhaust pipe, a turbocharger connected thereto, and a carburetor connected with a source of gas for the engine. The recirculation system includes an air conduit extending from the turbocharger compressor discharge to a venturi, an exhaust gas conduit that extends from a connection with the exhaust pipe between the engine and the turbocharger to the venturi, a second air conduit that extends from the exhaust pipe to a connection with the first air conduit, and control valves located in the exhaust gas conduit and in the second air conduit. The valves are closed when the engine is being started or idling at no load and open when a load is imposed or when engine rpm's are increased. No pumps, blowers, etc. are needed because the system operates on a differential in pressure created within the system to cause the exhaust gas recirculation.

Abstract: A supercharged internal combustion engine is equipped with a supercharging device, a knock sensor and a rotary valve disposed upstream of an intake part of the engine. A Miller cycle is applied to the engine, and when an engine knock occurs, such a phenomenon is sensed by the knock sensor to be converted into an electric signal by which a control device for the rotary valve is operable to stop the charge feed to the engine for a short period of time prior to the completion of the control stroke of the engine, thereby extremely enhancing the output power of the engine while eliminating the generation of the engine knock.

Abstract: An internal combustion engine which is supercharged by exhaust gas turbochargers and which includes an auxiliary combustion chamber. Exhaust gases from the auxiliary combustion chamber are temporarily fed to turbines of the exhaust gas turbocharger for improving acceleration characteristics of the internal combustion engine. The combustion air for the auxiliary combustion chamber is derived from the stream of supercharging air produced by the turbochargers. At least two exhaust turbochargers are provided which operate in parallel. In case of acceleration of the engine, the exhaust gases from the internal combustion engine circumvent the turbines of the exhaust gas turbochargers, and then the exhaust gases of the auxiliary combustion chamber alone effect the drive for all exhaust gas turbochargers.

Abstract: Combustion control in a spark ignited internal combustion engine for inhibition of incipient detonation, or knock, is provided by the addition of exhaust gases or other diluent gases to the intake manifold of the engine prior to opening of the intake valve. The addition of this diluent gas causes a prestratification of the charge entering the combustion chamber of the engine. Upon compression and ignition of the charge, the diluent gas inhibits spontaneous combustion of the portions of the charge furthest away from the site of ignition of the charge, thereby preventing one cause of incipient detonation. This combustion control may be used with turbocharged and supercharged engines, as well as with naturally aspirated internal combustion engines, and allows the engine to operate on much lower octane fuel than would be possible without prestratification.

Abstract: An internal combustion engine supercharged with air by an exhaust gas-driven turbo-compressor discharging through a by-pass duct a tapped flow rate of compressed air into the exhaust gas pipe-line feeding the turbine, said tapped flow rate of compressed air being heated by means of a heat exchanger inserted into the by-pass duct and through which are flowing the exhaust gases from the turbine, said tapped flow rate of heated compressed air being injected into the upstream end of the exhaust manifold of the engine.

Abstract: An arrangement for controlling a supply of air and a volume of fuel to an auxiliary combustion chamber associated with a supercharged internal combustion engine. The auxiliary combustion chamber being adapted to periodically deliver additional exhaust gas to an exhaust gas turbine of the supercharger as a function of an instantaneous exhaust gas volume from the internal combustion engine. A sensor is disposed in a charging air line of the internal combustion engine for influencing a pressure detector which delivers an actual value signal corresponding to the instantaneous charging air pressure. The signal reaching a comparator by way of an input amplifier, in which comparator the signal is compared with a guide parameter delivered by a fixed value adjustment device and corresponding to the desired constant charging air pressure.

Abstract: An internal combustion engine which is adapted to be supercharged by at least two exhaust gas turbochargers operating in parallel. The engine includes an auxiliary combustion chamber, the exhaust gas of which is temporarily fed to a turbine of an exhaust gas turbocharger for improving an acceleration characteristic of the internal combustion engine. Combustion air for an idling operation of the auxiliary combustion chamber is derived from a stream of supercharging air produced by the exhaust gas turbocharger. During a partial load operation of the engine, only one of the exhaust gas turbochargers is supplied with an entire volume of the exhaust gas of the internal combustion engine to provide the supply of supercharging air. The exhaust gas from the auxiliary combustion chamber, operated with a full load for the case of accelerating in a lower load range of operation of the internal combustion engine, is fed to the turbine of the other exhaust gas turbocharger.

Abstract: A bypass control apparatus for turbocharged internal-combustion engines, comprising an actuating cylinder for the bypass valve, wherein the pressure of a fluid medium or fluid in the actuating cylinder is controlled by a fixedly adjustable throttle in the fluid supply pipe or line and a throttle in the fluid discharge pipe or line which is adjustable by electromagnetic means in proportion to the engine speed.

Abstract: An internal combustion engine has a turbo-supercharger connected to an engine charge air intake manifold and an exhaust gas turbine connected to an engine exhaust manifold. An automatic bypass includes a bypass line interconnecting the exhaust manifold upstream of the exhaust gas turbine and the air intake manifold downstream of the compressor. A bypass valve in the bypass line comprising an adjustable throttle member for adapting the quantity of bypassed gas to the respective operating state of the engine. An actuating piston closes the throttle member in response to pressures from the compressor side above a pre-selected value. The actuating piston is disposed on a side of the throttle member facing away from the air intake manifold. The resistance of the valve to flow from the compressor side to the turbine side is less than the resistance in the opposite direction. The resistance to flow, and the fully unseated valve position define an operating curve of the engine which is adjustable.

Abstract: Disclosed is a power-plant comprising an internal-combustion engine, a turbo-charger providing the supercharging of said internal-combustion engine and having a turbine and a compressor whose outlet communicates with an inlet of the internal-combustion engine and, through a by-pass duct, with a turbine inlet communicating with an outlet of the internal-combustion engine. An air flow sensor is installed at an inlet of the compressor. Arranged in the by-pass duct are an auxiliary combustion chamber and an air flow rate adjusting device for the air by-passed from the compressor to the turbine. The air flow rate adjusting device incorporates a throttling member linked with a drive used to change the position thereof and is provided with a comparison unit having a first input, a second input, and an output.