Abstract: A hydraulic unit and an electromagnetic unit are disposed in directions that are orthogonal to each other. In addition, in a parking locked state, a roller of a pin of a piston rod and a lower abutment surface of a distal end portion of a solenoid shaft are in abutment with each other. Further, when a coil is not energized, the solenoid shaft is allowed to be moved rightward in the drawing through abutment between the pin of the piston rod and the distal end portion of the solenoid shaft during movement of the piston rod.

Abstract: A pneumatically actuated vacuum pump is disclosed, and includes a body defining a converging motive section, a diverging discharge section, at least one suction port, and a Venturi gap. The Venturi gap is located between an outlet end of the converging motive section and an inlet end of the diverging discharge section. The pneumatically actuated vacuum pump also includes a first check valve fluidly connected to the Venturi gap and the suction port. The pneumatically actuated vacuum pump further includes at least one second gap located in the diverging discharge section of the body downstream of the Venturi gap. A second check valve is fluidly connected to the second gap.

Abstract: An air compressor system includes a housing defining an inlet and an outlet, a butterfly valve coupled to the inlet and movable between a closed position and an open position, and an actuator coupled to the butterfly valve and operable to apply an actuator force to the butterfly valve to move the actuator and the butterfly valve to a desired position between the closed position and the open position. A feedback actuator is coupled to the actuator and is operable to apply a variable secondary force to the butterfly valve in opposition to the actuator force, the secondary force varying in response to the position of the butterfly valve.

Abstract: An engine includes a carburetor, a governor assembly, and a vacuum actuator. The carburetor includes a throttle plate configured to control a fluid flow, a throttle lever coupled to the throttle plate, and an intake port in fluid communication with an engine vacuum pressure. The governor assembly includes a governor, a governor linkage coupled to the governor and the throttle lever, and a governor spring coupled to the throttle lever to bias the throttle plate towards the fully open position. The vacuum actuator includes an actuator housing, a pressure-sensitive member positioned in the actuator housing, an actuator linkage directly coupled to the governor spring and also coupled to the pressure-sensitive member for movement in response to the engine vacuum pressure, and an actuator spring coupled between a fixed attachment point and the actuator linkage to bias the actuator linkage to increase the tension on the governor spring.

Abstract: An engine includes a throttle assembly, a governor, and an actuator. The throttle assembly is designed to at least partially control a fuel flow rate of the engine. The governor is designed to sense a speed of the engine and at least partially control the throttle assembly as a function of the engine speed. The actuator is designed to sense a manifold vacuum pressure of the engine and at least partially control the throttle assembly as a function of the vacuum pressure.

Abstract: An engine with two vacuum sources is disclosed. In one example, a valve position is adjusted when engine load is low and intake manifold pressure is low to arbitrate vacuum between the two vacuum sources. The approach may increase engine operating efficiency during at least some conditions.

Abstract: A device is provided for producing and/or augmenting a partial vacuum in a motor vehicle, in particular for operating a partial vacuum brake servo-unit. The device includes, but is not limited to a throttle unit, which has at least one throttle valve housing and a throttle valve which is arranged so as to be rotatable in an angle range in a throttle channel in the throttle valve housing for controlling a fluid flow in the throttle channel. The device also includes, but is not limited to means for producing and/or augmenting partial vacuum, the means being configured as partial vacuum augmentation means integrated into the throttle valve housing, which partial vacuum augmentation means act according to Bernoulli's principle in the manner of a sucking jet pump to produce an augmented partial vacuum for at least one brake servo-unit.

Abstract: An engine with a two vacuum sources is disclosed. In one example, a valve position is adjusted in when engine load is low and intake manifold pressure is low to arbitrate vacuum between the two vacuum sources. The approach may increase engine operating efficiency during at least some conditions.

Abstract: A variable flow control method and device between an air intake and a throttle comprise at least one one-way valve with suitable restoring function between the air intake and the throttle, especially for a fuel-injected car. Corresponding functions can be generated among the one-way valve, an air intake manifold and the throttle to adjust and control an engine so that the engine can rapidly get various rotating rates corresponding to various degrees of vacuum respectively as natural or original air taking can be effectively and rapidly accelerated when the accelerator is trampled rapidly, and reflect the improvement on performances responding to torsion and acceleration of the various rotating rates.

Abstract: An intake system for an internal combustion engine is provided which comprises a variable valve control apparatus capable of variably and continuously controlling the amount of intake air of an internal combustion engine by varying valve lift characteristics of an intake valve, a collector fluidly connected with a plurality of intake passages for cylinders of the internal combustion engine, and a pressure control mechanism for producing within the collector a vacuum that increases with increase of one of the amount of intake air, engine speed and engine load of the internal combustion engine.

Abstract: A method and system may be provided to perform a process for controlling NOx emissions of an target engine. In one embodiment of the invention, the process may include determining predicted NOx values based on a model reflecting a predetermined relationship between control parameters and NOx emissions, wherein the control parameters include ambient humidity, manifold pressure, manifold temperature, fuel rate, and engine speed associated with the engine. Further, the process may include adjusting the model based on a determination of whether the predicted NOx values meet a predetermined criteria associated with actual NOx values. The adjusted model may be stored in a memory associated with the engine whereby NOx emissions exhausted from the engine may be reduced based on virtual NOx emission values determined from the adjusted model.

Abstract: A device for estimating the amount of intake air of an internal combustion engine comprising intake pipe pressure calculation means for calculating an intake pipe pressure, at this time, downstream of the throttle valve, and intake air amount calculation means for calculating the amount of intake air, at this time, based on the intake pipe pressure at this time calculated by said intake pipe pressure calculation means, is provided. The intake pipe pressure calculation means calculates the intake pipe pressure at this time by using the intake pipe pressure calculated at the last time and the amount of air passing through the throttle valve at the last time calculated by means for calculating the amount of air passing through the throttle valve.

Abstract: Described are a method, a computer program, and a control unit for operating a vacuum reservoir (6) provided in an internal combustion engine of a motor vehicle for a servo booster or power-assist unit (8, 10, 11) of the internal combustion engine, which is coupled to an intake manifold (1) of the internal combustion engine and to an electrical suction pump (30). The pressure prevailing in the vacuum reservoir (6) is determined by a computational model in which quantity flows are fed to the vacuum reservoir (6) when at least one servo unit (8, 10, 11) is actuated, quantity flows are removed from the vacuum reservoir (6) when the pressure prevailing in the intake manifold (1) is lower than the pressure prevailing in the vacuum reservoir (6), i.e., when the electrical suction pump (30) is switched on. The total pressure prevailing in the vacuum reservoir (6) is calculated from the balance of these flow quantities.

Abstract: In a negative pressure actuator which is provided with a negative pressure tank storing an intake negative pressure of an engine, and operated by a negative pressure stored in said negative pressure tank as a power source, an operating possible time of the negative pressure actuator is calculated based on an intake negative pressure, the operation of the negative pressure actuator is permitted when it is within the operating possible time, while the operation of the negative pressure actuator is prohibited when it is over the operating possible time.

Abstract: A method and system adjusts powertrain controls to avoid significant deviations from set speed during speed control operation. Low vacuum conditions of a reservoir vacuum resulting from high load conditions are detected and eliminated through the initiation of downshifts. Detection is based on the determination that speed control mode has been initialized, the throttle is extended, vehicle acceleration is low, and there has been a significant deviation from set speed. The downshift creates an increase in engine rpm and a reduction in throttle angle to increase the manifold vacuum and thereby recharge the reservoir vacuum and eliminate the low vacuum condition. The transmission can be returned to normal operation and the pre-adjustment gear upon elimination of the low vacuum condition or the occurrence of a driver override condition.

Abstract: An apparatus for moving a valve flap, especially in the air intake duct of an internal combustion engine, including a vacuum box (20) which executes a longitudinal movement in dependence on the application of a negative pressure or vacuum, and the longitudinal movement of the vacuum box is transmitted via a coupling rod (16) to a traverse rod (15), which in turn is connected to an actuating lever (13) for the valve flap (11). The coupling rod (16) and traverse rod (15) system allows the vacuum box to be arranged in any position relative to the valve flap (11). The apparatus can be simplified further by combining the diaphragm disk (27) with the coupling rod (16) to form a single, integral part. In this case, a force is exerted eccentrically on the vacuum box. The eccentrically exerted force can be compensated by the diaphragm having a shape other than a round contour.

Abstract: A device for automatically adjusting fluid flow into an engine intake includes a body member adapted to mount upstream of the engine intake and having a fluid passage therethrough and an aperture therein intersecting the fluid passage, a plate slidably insertable into the aperture and having a bore therethrough corresponding to and registerable with the fluid passage when the plate is inserted in the body member, and a variable orifice operatively disposed in the bore and thereby defining an opening area which is automatically variable and dependent on fluid throw through the orifice demanded by the engine at a given RPM. This device can be used to handicap one racer or to establish engine performance parity in racing vehicles by mounting the device between the carburetor and engine intake of each vehicle.

Abstract: An intake air-flow control device for an internal combustion engine is disclosed. The device comprises an intake air-flow control valve provided for every cylinder of the engine, a negative pressure actuator for opening the intake air-flow control valve from a partly opened condition to a fully opened condition when a negative pressure is supplied to the negative pressure actuator. When a current engine load becomes higher than a predetermined value, the negative pressure is supplied to the negative pressure actuator. During rapid acceleration, the predetermined value is changed to lower.

Abstract: A controller for mechanically setting a diesel engine's air/fuel ratio at a stoichiometric value to reduce black smoke emissions by regulating the quantity of fuel injected into a diesel engine's combustion chamber in response to the quantity of air flow to the engine's cylinder consists of an air flow sensor device and a modulator. The air flow sensor device has a venturi tube located along the engine's air intake conduit, and the modulator is in air communication with the venturi tube via a hollow hose. The modulator is located between a fuel control device, such as an automobile's accelerator pedal, and the engine's fuel injection pump. The modulator consists of an outer shell, internal diaphragm, return spring, push-pull rod and air valve system. The diaphragm divides the modulator's interior cavity into a front chamber and a rear chamber which communicates with the venturi tube.

Abstract: An idle speed control for an internal combustion engine has a crankcase adapted to be connected to a fuel metering device used to selectively deliver fuel to the engine in response to pressurized air pulses generated in the engine. The idle speed control includes a vessel having a pressure actuated member movably mounted therein to define a first chamber and a second chamber. The second chamber is provided with a biasing device acting on one side of the pressure actuated member and the first chamber admits the pressurized air pulses acting on an opposite side of the pressure actuated member and controllably leaking a portion of the pulses therefrom. The idle speed is controlled by a leak-down rate of pressurized air pulses released from the second chamber.

Abstract: An air-flow control device, for an engine having an intake passage and a fuel injector arranged in the intake passage for injecting fuel into the intake passage, includes an air-flow control valve, and a driving apparatus for driving the air-flow control valve. The air-flow control valve is arranged in the intake passage upstream of the fuel injector. The apparatus includes a first vacuum chamber into which the atmospheric pressure or a negative pressure produced in the intake passage downstream of the air-flow control valve is selectively introduced via a first vacuum control valve, and a second vacuum chamber into which the atmospheric pressure or a negative pressure produced in the intake passage downstream of the air-flow control valve is selectively introduced via a second vacuum control valve. The apparatus drives the air-flow control valve so that the degree of opening of the air-flow control valve becomes larger as the negative pressure in the first and the second vacuum chamber becomes larger.

Abstract: The piston actuator for a governor valve in a carburetor is coupled through an electromagnetically operable selector valve to either atmospheric pressure in the air filter or to vacuum in an intake manifold. The selector valve is controlled by engine speed detected by speed detecting means, and by a switch controlled by the accelerator linkage to close a circuit whenever the accelerator pedal is depressed to within a range bordering maximum depression. When the accelerator pedal is depressed to within the above range, and engine speed is below a predetermined value, the selector valve connects to the manifold to interrupt operation of the governor valve. Operation of the governor valve resumes when the speed reaches the preset value or the accelerator pedal leaves said range.

Abstract: A vehicle switch means includes an electric switch operatively closed or opened as driven by a central spindle controlled by a vacuum controller communicated with an inlet manifold of a car engine, whereby when the car is subject to a heavy load, the weak vacuum suction force in the inlet manifold will not suck a diaphragm in the vacuum controller and the spindle will be resiliently restored outwardly to switch off the electric switch to stop the running of compressor of a car air conditioner, thereby reducing the car engine load and being helpful for climbing a steep surface.

Abstract: The invention relates to an actuating device for a throttle valve arranged in an intake pipe in a diesel internal combustion engine, having a mechanical adjusting linkage for the load-dependent adjustment of the throttle valve, the adjusting linkage having an idle path. In order to be able to control the throttle valve as a function of a plurality of operating parameters, an actuator actuated by an auxiliary force is proposed via which the throttle valve position predetermined as a function of load can be altered within the idle path.

Abstract: An apparatus for assisting a primary governor device (20) on an engine at certain load conditions or during transient loading is disclosed. The primary governor device has a control arm (12) which is moved by a primary governor spring (15) via a primary governor arm (14). The control arm (12) governs opening and closing of the throttle plate (10) on the carburetor (11). Four embodiments (47, 54, 30 and 78) of the governor assist mechanism are disclosed. The governor assist apparatus has an assist spring (48, 55, 32, 76) operatively connected to the control arm (12). A vacuum capsule (41) actuates the assist spring (48, 55, 32, 76) from the primary governor device (20) according to the vacuum in the intake manifold and load on the engine. The first embodiment or linear mechanism (47) has an assist spring (48), an intermediate link (49), and the diaphragm plunger (40) in linear alignment.

Abstract: A fuel injection apparatus in which a closed fuel circuit is pressurized, and the amount of fuel injected is determined by varying the area switching on/off time of a solenoid in the injector, thereby allowing variance in the area factor of the equation Q=AV; where Q=flow, A=area, V=velocity. Air intake by the engine is controlled in response to the aspiration conditions of the engine via intake and exhaust signals. The fuel injection apparatus includes a reservoir with a fixed level of fuel, and a low pressure pump which pumps fuel into a circuit containing a pressure relief valve splitting amounts between the reservoir and leaving an amount of fuel approximate to the engine's needs going on the electronic injectors. The basic control of the injector's on/off time is governed by ohmic change of the oscillator input, which is controlled by the conventional accelerator pedal.

Abstract: The invention is directed to a control system for a two-stroke engine for limiting a control quantity thereof such as the rotational speed. For this purpose, a pressure line including a valve is connected to the crankcase and leads to a pneumatic controlling member which is responsive to a mechanical or electrical signal (vibrations or electric pulse from the ignition system). By means of suitable transmission means, the movement of the controlling member is transmitted to the carburetor throttle, for example.

Abstract: An intake system for an internal combustion engine, the system having an air tank of a predetermined volume. The tank is connected to a intake pipe of the engine via a first connecting pipe. The tank is connected to an air cleaner via a second connecting pipe. A control valve is arranged at a position where the first connecting pipe is connected to the intake pipe so as to change the effective intake pipe length. The control valve is operated in response to the operating conditions of the engine to select the effective intake pipe length capable of attaining increased volumetric efficiency.

Abstract: A modulated vehicle cruise control system includes a source of vacuum, a servo transducer or control unit connected to the source of vacuum, an engine throttle position servo connected to the servo, a speed sensor and a logic circuit or command module. A modulator is disposed in series with and between the control unit and the source of vacuum. The modulator limits opening movement of the engine throttle by modulating communication of vacuum to the servo to prevent inefficient engine operation.

Abstract: Apparatus for controlling the air to gas ratio of fuel being supplied to a gas engine that utilizes the pressure in the inlet of the carburetor and the pressure in the intake manifold of the engine to control a regulator that is used to supply gas to the engine. The control mechanism is responsive to a signal from an intelligence source, such as an exhaust gas sensor, for varying the air to gas ratio to a preset or desired air to gas ratio. A method for controlling the air to gas ratio of fuel being supplied to a gas engine wherein an engine function is sensed and a signal generated representative of the function. The signal is compared with a reference signal and a resultant signal is generated. Pressure is then generated that is representative of the resultant signal and the pressure is applied to the regulator to cause a predetermined rate of flow of gas to the carburetor, thereby controlling the air to gas fuel ratio to the engine.

Abstract: A constant speed driving device has an ejector for supplying negative pressure to an actuator which controls the engine's throttle valve. The ejector includes a diffuser communicating with the engine intake manifold downstream of the throttle valve and a nozzle communicating through a pressure responsive control valve with the intake conduit upstream of the throttle valve and downstream of the supercharger. A negative pressure suction port of the ejector communicates with the negative pressure inlet port of the actuator. The constant speed control device is capable of supplying, even in the operation of the supercharger, a sufficiently increased negative pressure to the actuator for operating the throttle valve without the need to provide a vacuum pump.

Abstract: The RPM bias valve combines a first fluid signal which varies inversely with the throttle position or with other engine conditions and a second fluid signal which varies with engine speed to produce a modulated output signal which varies as a function of both. A pressure responsive diaphragm (68) separates a first signal chamber (62) and a modulated output signal chamber (66). The diaphragm is also biased by an extension spring (90) which is connected with a cam follower (104). The position of the cam follower, hence, the biasing force or pressure applied by the extension spring, is controlled by a cam (102) and a rolling diaphragm (106) which is operated upon by the second fluid signal. A first valve (70) selectively connects the first and modulated signal chambers to reduce the vacuum in the modulated output signal chamber when the pressure responsive diaphragm (68) is out of its equilibrium position in one direction.

Abstract: An air/fuel ratio compensating device is provided for association with an internal combustion engine having a fuel control valve, air suction pipe means and pedal accelerator means, the compensating device including an area flow metal system made up of a flow detection valve positioned upstream in the air suction pipe means and operatively associated with the fuel control valve, a flow control valve positioned downstream in the air suction pipe means in series with the flow detection valve and being operatively connected to the accelerator pedal means, the area flow meter system enabling the difference in pressure existing on opposite sides of the flow detection valve to be maintained at a predetermined value to insure that the amount of air flow is proportional to the opening area of the flow detection valve thus permitting a determination of the amount of air flow on the basis of the opened area of the flow detection valve, a feedback control mechanism for controlling the area control flow meter and includi

Abstract: A modulated vehicle cruise control system includes a source of vacuum, a servo transducer or control unit connected to the source of vacuum, an engine throttle position servo connected to the servo, a speed sensor and a logic circuit or command module. A modulator is disposed in series with and between the control unit and the source of vacuum. The modulator limits opening movement of the engine throttle by modulating communication of vacuum to the servo to prevent inefficient engine operation.

Abstract: A throttle stop assembly is shown having a body or housing containing a diaphragm therein which serves to define within such housing a relatively high pressure or atmospheric chamber at one side of the diaphragm and a relatively low pressure or vacuum chamber at the other side of the diaphragm; the vacuum chamber is provided with at least one interior wall against which the diaphragm member is brought when a first magnitude of vacuum is admitted to the vacuum chamber as to thereby correspondingly position a related movable throttle stop member; when a second magnitude of vacuum is admitted to the vacuum chamber a portion of the diaphragm is moved further toward and operatively against a second wall or abutment as to thereby again correspondingly position the related movable throttle stop member.

Abstract: Controls are provided to directly or indirectly avoid operation of the internal combustion engine of a motor vehicle in a range of speed and output power which is detrimental to engine efficiency. The controls become operative upon attainment of a predetermined limit value for engine parameters.

Abstract: An aspirator using positive pressure from a suitable source generates a vacuum pressure when the primary source of vacuum pressure, typically the engine intake manifold, prodcuces insufficient vacuum pressure to operate a device such as a road speed control servomotor. The aspirator assembly is connected to the source of positive pressure and the engine intake manifold as well as to atmosphere and to the device to be operated by vacuum power. When there is sufficient intake manifold vacuum pressure for the desired purpose, there is no flow through the aspirator and the engine intake manifold supplies all of the vacuum needs of the servomotor. When aspirator vacuum pressure is required due to insufficient manifold vacuum pressure, the aspirator is opened to generate aspirated vacuum pressure and the connection between the servomotor and manifold vacuum is closed. The aspirated air is delivered to the engine intake manifold.

Abstract: The present invention relates to a variable valve timing system for an internal combustion engine which cyclically opens and closes a port providing fluid communication between a combustion chamber and a conduit leading thereto and which delays the closure of the port in response to a signal indicative of the power output required of the engine in order to vary the ratio of the mass of fluid inducted into the chamber to the mass of fluid expelled from said chamber during the period the port is open so that the mass of fluid retained in the chamber after closure of the port can be controlled without the use of a throttle valve.

Abstract: An air-fuel mixture is delivered at a certain predetermined velocity through a pressure-regulated gate to a dual screen atomizer consisting of a first comparatively coarse mesh screen in contact with a finer mesh screen close to the throat of the gate. The liquid fuel is atomized to uniform size droplets in the small micron range and a homogeneous charge is created in an enlarged plenum downstream from the dual screen atomizer. Pressure in the downstream plenum is reduced in comparison to the pressure existing in the fuel mixture delivery passage upstream from the gate.

Abstract: An intake air throttle valve control system for a diesel engine which greatly reduces vibration and noise and rough engine running at idling speeds. A throttle valve is provided in an intake passage in series with the intake air manifold of the engine with the valve operated by a negative pressure responsive actuator. The negative pressure responsive actuator is coupled to a source of negative pressure through a series-connected arrangement of a water temperature sensing valve, a vacuum cut-off valve and a negative pressure control valve. The water temperature sensing valve operates to connect or disconnect the source of negative pressure to the actuator in response to the temperature of the engine coolant. The vacuum cut-off valve vents the connections to the actuator to the atmosphere in response to an engine operating parameter such as the exhaust manifold pressure, the pressure in an oil line of the engine, or an output voltage of a generator which varies in response to the engine speed.

Abstract: An idle controller for an internal combustion engine which increases the idle setting of the engine and retards the idling timing whenever the heater is operated, so that in a particular embodiment in a vehicle which further includes an air conditioner the idle controller increases the idle opening of the throttle valve whenever either the heater or the air conditioner is operated, and retards the timing when the heater is operated.

Abstract: A pneumatically operated speed governor (26) for moving an engine throttle member (10) for controlling the speed of a vehicle includes a pneumatically operated actuator having an output connected to the engine throttle member. A pivotally mounted valve member (44) is positioned intermediate a vacuum supply orifice (46) and an atmospheric air orifice (48) and supplies a pneumatic signal to the actuator. An inertial speed sensor (82) responsive to vehicle speed has an output member (100) which reacts against an improved, self-wiping minimum speed switch (102) and a set-speed control member (52) which in turn reacts against the pivotally mounted valve member (44) for varying the position of the valve member as the vehicle speed tends to fall below or rise above a predetermined set speed.

Abstract: A throttle valve opening controller for applying varying retarding forces against the closing force of the throttle valve at the time of quick closing thereof depending on the operating condition of the engine, comprising:a first diaphragm device consisting of a first diaphragm which is moved in conjunction with the throttle valve when the throttle valve opening is smaller than the specified value, a spring for urging said first diaphragm with a force smaller than the closing force of the throttle valve, and a first diaphragm chamber which is formed in the rear of said first diaphragm and to which atmospheric pressure is admitted; anda second diaphragm device connected to said first diaphragm device, consisting of a second diaphragm having a stopper for controlling the position of said first diaphragm, a spring for urging said second diaphragm with a force larger than the closing force of the throttle valve, and a second diaphragm chamber formed in the rear of said second diaphragm.

Abstract: An apparatus is disclosed whereby a sudden perceptible resistance is applied to the accelerator pedal of an automobile vehicle when the intake manifold vacuum pressure level decreases below a preselected pressure. A pneumatic motor is operated by a throttle valve that mixes the ambient and manifold vacuum. The motor controls the relative position of a helical spring relative to the throttle control and allows the throttle control and spring to engage abruptly when the manifold vacuum pressure is below the preselected level and withdraws the spring from contact with the throttle control when the manifold vacuum pressure exceeds that pressure level.

Abstract: A suction pipe is provided to suck and introduce air from its one end and is connected at its other end to an internal combustion engine. The suction pipe is provided at its one end with a venturi portion and a throttle valve. A first negative pressure detector is provided to detect the negative pressure at the portion of the suction pipe remote from the internal combustion engine, so as to sense a comparatively gentle pressure rise in the suction pipe. A control valve is provided to be opened and closed in accordance with the output from the first negative pressure detector, thereby to control the flow rate of air supplied into the suction pipe. A second negative pressure detector is provided to detect the negative pressure at a portion of the suction pipe remote from the internal combustion engine, so as to sense an abrupt increase of the negative pressure in the suction pipe.

Abstract: A device for protecting internal combustion fuel injection engines from overspeeding which comprises a closing member having the form of a revolving flap (2) installed in the supply conduit (1) of the engine, controlled by the air flowing through and adapted to close the supply conduit (1) at a predetermined air flow speed corresponding to the maximum permissible engine speed. Flap (2) is over shaft (3) coupled with lever (4) connected with tension spring (5).In the course of normal operation of an engine, flap (2) is maintained by spring (5) and stop (7) at angle .alpha. in relation to the axis of the supply conduit (1).

Abstract: A fluid device for vehicle fuel consumption enhancement including a body defining a compressible chamber therein the body is connected to the throttle linkage to be compressed responsive to movement of the vehicle throttle in the acceleration direction, the chamber housing a fluid therein which is adapted to be expelled through a fluid bleed orifice upon compression of the chamber to control the force of movement of the vehicle throttle, the bleed being preferably variable to control the speed of movement of the vehicle throttle, the device further including a fluid return providing a means for the return of the expelled fluid back into the chamber upon the deceleration of the vehicle throttle and further including a safety valve positioned in fluid flow communication with the chamber and adapted to allow instantaneous expelling of substantially all of the fluid from the chamber responsive to a predetermined large amount of force being exerted against the vehicle throttle and thereby against the compressible

Abstract: A fuel supply system for supplying fuel and for satisfactorily preparing the fuel-air mixture fed to a mixture-compressing, spark-ignited internal combustion engine which comprises an arbitrarily operable throttle element arranged in the air intake manifold wherein fuel can be supplied upstream of this throttle element. The throttle element is mounted on a rocking lever connected to a bearing shaft arranged outside of the air flow at the air intake manifold and is displaceable in the opening direction during full load and at higher speeds against the force of a compensating spring until the throttle element comes into contact, with a full-load stop, with the rocking lever. During full load and at low speeds, the compensating spring displaces the throttle element in the closing direction so that a rather large pressure drop occurs at the throttle element so that an improved conditioning of the injected fuel is obtained.

Abstract: A fuel economizer system and fuel flow control valve arrangement for an internal combustion engine having a fuel supply tank, a main fuel supply line connecting the tank to the carburetor inlet of the engine, and a fuel pump in the supply line for delivering fuel to the carburetor inlet. The control valve arrangement is located in the fuel supply line between the fuel pump and the carburetor inlet, and includes a first control valve which is automatically incrementally adjusted between closed and open position by a diaphragm motor which is operatively connected to the intake manifold of the engine such that changes in vacuum in the intake manifold automatically adjust the control valve to proportionally increase or decrease the supply of fuel to the carburetor inlet.

Abstract: A gas flow measuring mechanism having a feedback control mechanism comprising a flow detection valve and a flow control valve which are in series with each other and placed in a channel, an area flowmeter for keeping constant the difference in the pressures existing on opposite sides of said flow detection valve and determining the amount of incoming air by the opening area of the flow detection valve, a pressure-sensitive amplifier mechanism for sensing the deviation of the difference in the pressures existing on opposite sides of the flow detection valve from a set pressure difference on the basis of the displacement of a pressure setting diaphragm, and a valve opening mechanism for controlling the opening and closing of the flow detection valve, wherein a bellows enclosing a gas at a reference temperature and under a reference pressure and having an effective area equal to (effective area of pressure difference setting diaphragm).times.