Abstract: A ridge ventilating device that allows for the passive ventilation of agricultural buildings and the like, and which device resists the affects of snow or ice and allows for regulation of the flow of air from the building. Pairs of hinged door panels which operate by opening and closing coincidentally with each other, thereby covering and uncovering an elongate ridge passage cut into the ridge or peak of the roof structure. The doors are hingedly attached along the outside edges of the passage so that they open away from each other and create an unobstructed opening in the roof for the air to exhaust through. Each door is pivotally attached to a connecting link which connecting links are in turn connected at a common pivot point to the shaft of a dual-acting air cylinder. The air cylinder thus provides the motion for opening and closing the doors.

Abstract: A combination tea dispenser and brewer wherein a variety of different teas are provided in individual dispensers which are located in a position to dispense tea into an area where the dispensed tea is contacted by boiling water to brew the same. The brewed tea falls into a pot on the dispenser and is ready to be served.

Abstract: A synchronized press and method for forming bakery products. A press plate presses a portion of bakery product ingredients against a rotatable disc in a continuous motion. A conveyor belt deposits portions of the bakery product ingredients on the disc at timed intervals. A gearing mechanism synchronizes the movement of the press plate and disc so that the horizontal speed of the press plate is substantially equivalent to the angular speed of the disc. The gearing mechanism also synchronizes the deposit of bakery product ingredients on the disc.

Abstract: Apparatus and process for compressing moisture containing material including a pair of opposed rolls for receiving and advancing the material therebetween to apply rolling load thereto to compress the material and remove at least a portion of said moisture therefrom, and differential means for causing one of said rolls to rotate at a lower speed than the rolling speed of the other of the rolls, the differential rolling speeds developing friction between the rolls causing the rolls to be heated and apply heat to said material to further remove moisture therefrom, to cause the compressed material to adhere to the one roll and to cause the removed moisture to adhere to the other roll, also alone and in combination, apparatus and process of decomposing organic material such as an animal biomass by the action of aerobic microorganisms in the presence of oxygen, including introducing the organic material into a container having an end adapted to receive the organic material and an output end adapted to discharge th

Abstract: A cylindrical bale forming machine has a bale transfer unit yieldably maintained in a transport or rest horizontal position located below the bale discharge gate to receive a bale discharged from the machine for transfer to a ground location rearwardly clear of the discharge gate. The transfer unit is operated in response to the movement of the discharge gate into its open or bale discharge position and is returned to its rest position in response to movement of the discharge gate out of the open position therefor.

Abstract: A drum press with a rotating dewatering drum, inside which is eccentrically located a press roll of which the outer surface together with the inner surface of the dewatering drum defines a press gap compressing mass, such as bark, and in conjunction with the dewatering drum a removal screw is provided which detaches the mass that has been pressed to adhere to the inner surface of the dewatering drum and removes it for the next treatment step. The portion of the removal screw which is used to detach the pressed mass comprises a separate screw section removably disposed on the shaft of the removal screw and which is replaceable with ease.

Abstract: A dot matrix print head energy control circuit (commonly known as voltage source compensation) utilizes two pulse width modulator circuits (one for receipt printing and one for forms printing). The control circuit also comprises control circuitry and a data latch, the circuitry including RC networks and comparators responsive to outputs of the data latch. A FORMS signal, when inactive and utilizing a source or applied voltage of 24 volts, sets or selects the RC network for receipt printing having an energizing pulse duration of approximately 340 microseconds, and the FORMS signal when active sets or selects the RC network for forms printing having an energizing pulse duration of approximately 380 microseconds. A source or applied voltage of 28 volts sets pulse durations of approximately 300 and 340 microseconds for receipt and forms printing, respectively.

Abstract: A control for a dot matrix shuttle printer executing a sinusoidal velocity traversal across a line on a print medium comprises calculating the instantaneous position locations of the print elements during such traversal by making use of a lookup table. A dot image buffer stores information signals representing an entire line of desired dots to be printed. The calculated positions location information and the information signals are used to cause the desired dots to be printed in spatial sequence across a dot line at desired locations at the appropriate time during shuttle motion.

Abstract: A compact printer having a cylindrical support member and a type carrier member externally affixed to the support member. A type printing assembly is disposed within the type drum for causing characters on the type carrier member to print. A motor for rotating the type drum is connected directly to the drum and disposed immediately adjacent to the type drum with axes of rotation being colinear. A paper feed drive for feeding paper one time per revolution of the type drum includes an intermittent tooth on an end of the support member, a feed gear for being turned by engagement with the intermittent gear, and a paper feed roller driven by the feed gear to feed paper to be printed on. A generating means including a cam on the type drum, positively generates an output indicative of a given position of the type drum.

Abstract: A printing mechanism for use in an impact printing system primarily intended for the transfer of a dry film impression onto an image carrying tape. The mechanism includes a hammer (130), and an anvil (126). The hammer is actuated by lever arm (164) which is in turn accuated by eccentric cam (194). At its upper end the hammer is biased by a pivotal spring mechanism (152) against a roller bearing (162). At its lower end the hammer (130) has a guide pin (140) which passes through an aperture (144) in a guide plate (142). The guide plate is adjustably mounted by means of slots (141) so that movement of the guide plate adjusts the inclination of the hammer.

Abstract: The invention provides a process for ink tampon printing, wherein printing forms are taken from inked printing blocks by ink tampons and transferred to work pieces mounted in work piece holders. To achieve multicolor printing of a work piece with a single work piece holder, the process of the present invention provides that a plurality of printing forms are taken from a printing block or printing blocks by a plurality of ink tampons aligned next to one another, that the ink tampons are then located in printing positions and the work piece is sequentially located in the printing positions by means of adjustment of the single work piece holder on a sliding track, and through sequential printing and reset strokes of the ink tampons, along with the corresponding adjustment of the work piece holder to the printing positions of the ink tampons, the printing forms are successively transferred to the single work piece mounted in a single work piece holder.

Abstract: Apparatus for mounting a flexible printing plate comprises a printing cylinder having a surface upon which the printing plate is mountable, and a connection for applying subatmospheric pressure inside the cylinder. A plurality of valves selectively apply the subatmospheric pressure to the surface from inside the cylinder. These valves have depressable actuating members protrudable above the cylinder surface. Those actuating members contacted by the printing plate when applied to the cylinder surface are depressed thereby to effect application of subatmospheric pressure to beneath the printing plate to draw the plate against the cylinder. Preferably, grooves are provided in the cylinder surface for distribution of the subatmospheric pressure beneath the plate. Advantageously, the printing plate may have a thin, highly flexible and deformable fringe along its trailing edge to seal the surface grooves, at that location.

Abstract: A projectile fuse comprises a rotor rotatable from a safety position to a live position. A slide is arranged to immobilize the rotor in its safety position. A piston is operably connected to the slide for displacing the slide to release the rotor for rotation. A conduit communicates one end of the piston with air pressure generated in response to firing of the projectile to shift the slide in a manner displacing the slide to release the rotor.

Abstract: A cartridge launched spin stabilized disk for deploying chaff (radar countermeasure dipoles) or other expendable materials or substances from a moving aircraft. The disk, containing the expendable material is ejected from the aircraft at some elevation angle and at an angle in azimuth off of the aircraft line-of-flight and dispenses the expendable material in a more or less uniform fashion for a brief period of time as it travels away from the aircraft.

Abstract: An apparatus for accurately positioning the support member which is carried by a movable member movable along a trackway or the like comprising a fixed cam having an arcuate surface, at least one cam follower engagable with said cam and means for sensing the position of the cam follower relative to the cam so that when the cam follower has reached a predetermined position along the cam the support member is accurately positioned. A sensing means is disclosed including a cam follower shaft attached to the cam follower. An analog shaft angle resolver is rotatably connected to the cam follower shaft so as to measure the angular rotation of the cam follower shaft and produce a voltage corresponding to the angular rotational position of the cam follower shaft. The analog voltage signal is then converted into a digital signal and fed into a digital display which displays a number proportional to the distance the support member is from a predetermined position.

Abstract: In the subsurface application of herbicides, a plurality of upwardly directed nozzles having one millimeter openings are pulled beneath the soil surface behind the trailing side of a sweep in parallel paths two to four centimeters apart while jets of herbicide are emitted so that moving soil passing over each jet receives ample herbicide properly spaced to control germinating weeds. The pressure of application and speed of movement forms treated bands having widths before diffusion of five millimeters of soil and liquid uniformly mixed to a depth of approximately eight centimeters over the treated area. The sweep operates at a depth up to eight centimeters and pesticide incorporation depends on such variables as soil density, soil moisture, spacing of nozzles and injection pressure. A uniform distribution of chemicals in bands near or completely to the surface of the soil is made possible with a one-pass operation, while the soil and plant residue on the surface remain substantially undisturbed.

Abstract: A movement control apparatus for a sewing machine to automatically control movement initiating timing corresponding to various sewing machine speeds.

Abstract: An ornamental thread automatic cutting device of a flat plural-needles sewing machine. Ornamental thread can be cut automatically at the same time as needle thread and looper thread are cut and a cut end of ornamental thread just after passing the eyelet is gripped mechanically upon cutting to facilitate the succeeding sewing operation.

Abstract: This disclosure relates to an arrangement for self-righting a water craft, such as water craft from an overturned position to a normal upright position. The craft comprises a substantially enclosed room and a reverse bilge well provided in both left and right side portions in an engine room.

Abstract: A rudder system is provided on a vessel with an open propeller or no propeller, comprising at least three rudders coupled to turn in unison and operating as a cascade. The rudders are mounted on stocks journalled in bearings carried by a box above the rudder which box is fitted into a recess in the hull. A master tiller is provided on the center stock, and the three stocks are coupled to one another within the box.

Abstract: A line securing or fastening device having a base, a neck tapering upwardly from the base and a generally arcuate knob portion on top of the neck and two transverse wedge-shaped channel openings through the principal axis passing through the device and the channels separating the neck and knob into four segments or posts open at the top and adapted to be firmly secured to a structure such as a hull or deck so as to provide an easy means of adjustably securing lines, such as mooring lines and admitting of quick release from the fastening device.

Abstract: An offshore marine structure setting and recovery device and method that can lift great loads offshore. The unit consists of a conventional deck cargo barge fitted with one or more rails running almost the entire length of the barge. A horizontal jacking unit runs along the rail or rails. Pivotally attached to the horizontal jacking unit is an inclined jacking unit that is connected to the grappling arm by a rack and pinion. The grappling arm has attached to it grappling devices that will grab and hold the vertical or inclined members of the marine structure. At one end of the grappling arm is a buoyancy tank that can be filled with either water or air to make the grappling arm and buoyancy tank float or sink. The device will be moved up to a marine structure, clamp itself onto the structure and then pull the structure over. The buoyancy tanks will then be filled with air, transporting the marine structure to the surface. The horizontal jacking unit will then pull the unit up and onto the deck of the barge.

Abstract: A floating dock having individual dock sections pivotally interconnected by continuous metal hinge connectors to permit relative vertical pivoting movement between adjacent dock sections. The hinge connectors each comprise a pair of elongated metal hinge leafs pivotally interconnected by a pivot pin extending through aligned hinge loops on the hinge leafs. The hinge connectors are secured to adjoining spaced, parallel, portions of the respective dock sections with their pivot pins extending horizontally and lengthwise of the spacing therebetween and with the hinge leafs and their hinge loops bridging and closing the gap between the spaced dock sections at the level of their deck surfaces to form continuations thereof. The hinge leafs are preferably formed with depending side anchor leg portions for securing them to the dock sections, and their hinge loops are preferably located on their underside.

Abstract: A wire chain connector for an anchor line has a swivel coupled to a rope socket via a link, and a ball adapter mounted on the outer periphery of the link. A wire rope groove is formed in the inner surface of a peripheral groove in a sheave to allow a wire rope to pass along it. A chain pocket is formed in the central portion of the peripheral groove in the sheave to allow a chain to pass along it. A connector groove is formed in the outer surface of the peripheral groove in the sheave to allow the anchor line to pass along it. The body of the swivel and the ball adapter are so sized that they can be seated in the connector groove.

Abstract: A labeling device for bottles and the like features a rotor turning about a vertical axis and having a plurality of semi-circular glue pallets arranged in a circle on the rotor and oscillated through a limited angle as the rotor rotates. The pallets, after having contacted a glue coated roller, encounter the foremost label in a magazine and adhere to the label for moving the label to a transfer drum from which it is applied to the vessel in labeling position. The rotor is supported in a gear box and the glue roller is connected in a detachable manner at its end most remote from the gear box with a rigid arm having a stud shaft that engages the glue roller in a roller bearing. The arm is also provided with a stud shaft that makes a releasable connection with the rotor coincident with its axis to provide further support for the arm.

Abstract: A novel and improved airbrush support and guidance apparatus which permits an airbrush to be held at a uniform standoff distance and at a preselected orientation with respect to a workpiece surface while traversing the workpiece surface in a preselected path of travel including freehand or generally curvilinear paths of travel, as well as, linear, and circular arc paths of travel, while maintaining a uniform standoff and orientation respect to the workpiece surface to provide for increased precision in the rendering of airbrush artwork.

Abstract: An apparatus for manufacturing corrugated board by combining a non-waterproof starch based adhesive and a waterproofing resin continuously and in small quantities to ensure improved wet strength board performance.

Abstract: An insulator film can be formed at a low temperature without any damage to a substrate to be treated by a plasma in a plasma treatment system which comprises a magnetron for generating a microwave, an isolator for isolating a wave guide from the magnetron, a discharge tube for generating a plasma, the wave guide for leading the microwave from the magnetron to the discharge tube, a vacuum chamber integrally formed together with the discharge tube, an evaporation source provided in the vacuum chamber, a substrate to be treated and provided at a position to sandwich a stream of the plasma between the substrate and the evaporation source, electromagnets provided around the discharge tube and the vacuum chamber, and a manipulator for manipulating the substrate, the electromagnets generating a magnetic field to confine the stream of the plasma.

Abstract: The subject invention involves a combination of a table constituting a support comprising a top, framework forming a compartment and legs which define a relatively large unobstructed center area or space and the litter equipment which is substantially arranged or confined in that space.More particularly, the equipment for litter comprises a relatively large plastic bag and receptacle of appropriate size containing litter which is placed in the bottom of the bag, and the bag is also provided with an opening through which a cat may enter into the receptacle and exit therefrom. The bag is preferably transparent or translucent and its upper extremity is preferably detachably connected at several locations in order to stabilize or support the bag in an upright condition in the central space or area of the support or table.One component of the equipment and/or support is a tablecloth, cover or drape, preferably one reaching to the floor, which serves to cover and conceal the support and the litter equipment.

Abstract: Boiler with a circulating fluidized bed, comprising a fluidization column completely lined with refractory material, a recirculation cyclone (2) and a duct (3) for recycling the solid materials. At least one heat-exchanger component (25, 26, 27) is placed in the recirculation cyclone (2). Pipe lines (30) enable air to be injected in tangential directions into the upper part of the cyclone (2) and thereby to increase the vortex effect. The combustion takes place substantially in the upper part of the cyclone (2). The fluidization column (1) comprises a widened section (1a) in its lower part.

Abstract: A method for controlling the combustion and reduction processes in a black liquor (B.L.) boiler of a paper pulp plant by influencing the feeding of black liquor to the B.L. recovery boiler by means of a B.L. gun. Characteristic of the method is that the average thickness of the layer of the B.L. flow, immediately after the black liquor has left the B.L. gun, is controlled to have a desired magnitude. The thickness of the B.L. layer is obtained in the form of an indirect measure which is defined as the droplet index (=DIX) and is constituted by a relationship between the viscosity, the density and the feed rate of the black liquor and by at least the shape and the opening area, of the B.L. gun.

Abstract: An apparatus for drying wet steam and subsequently superheating the dried steam. The apparatus includes a cylindrical tank, a separator that is disposed in the tank for receiving wet steam and removing water therefrom, and a superheater disposed in the tank for receiving dry steam from the separator. The superheater is provided with a plurality of tube bundles, some of which are part of first superheater stage, and the rest are part of a second superheater stage. The tube bundles form a channel in the center of the tank. Outwardly disposed deflectors are disposed in, and extend in the longitudinal direction of, the tank. These deflectors are associated with the tube bundles in such a way that dry steam from the separator flows, from the outside, inwardly through the tube bundles of the first superheater stage, and into the central channel, and from there, from the inside, outwardly through the tube bundles of the second superheater stage.

Abstract: A fuel charging system which injects nitrous oxide into the engine of a high performance vehicle to provide an instant burst of power to the vehicle. A nitrous oxide supply line feeds nitrous oxide under pressure from a supply container thereof into the vehicle engine through a spray bar. A normally closed solenoid valve controls the flow of nitrous oxide into the vehicle engine through the supply line. The supply line also is connected to a vent tube having a normally open solenoid valve controlling the flow of nitrous oxide thereto. The vent valve communicates with a one-way low pressure actuated check valve and vents any nitrous oxide leaking past the closed solenoid control valve into the atmosphere to prevent the harmful buildup of nitrous oxide in the engine.

Abstract: A cylinder block and head assembly for use in an internal combustion engine includes a closed-deck cylinder block having a deck and a water jacket, a cylinder head mounted on the deck and having a water jacket, and a gasket interposed between the cylinder block and the cylinder head. Communication passages are defined in the cylinder block, the cylinder head, and the gasket and provide communication between the water jackets in the cylinder block and the cylinder head. Recesses are defined adjacent to the communication passages and between the cylinder block and the cylinder head for increasing the pressure on the surfaces of the gasket between the cylinder block and the cylinder head through a reduction in the area of contact between the gasket surfaces and the cylinder block and head. In alternate embodiments the gasket or the cylinder block has holes providing communication between the recesses and the communication passages.

Abstract: An internal combustion engine cylinder assembly comprising a first elongated cylinder having substantially vertically disposed interior walls defining an elongated firing chamber therein; first piston means housed within the firing chamber and adapted for vertical reciprocation within the firing chamber; gas inlet channels means in the lower portion of the firing chamber; a crankcase housing having a gas compression chamber disposed therein; valve means adapted to permit fresh fuel/air mixtures to be charged into the gas compression chamber upon the depressuring of the chamber; second cylinder means positioned at the upper end of the first cylinder and having an exhaust chamber therein and a second piston means disposed within the exhaust chamber and adapted for vertical reciprocation therein, the exhaust chamber communicating with the upper end of the firing chamber; the second cylinder means being provided in the lower portion thereof with at least one exhaust gas port adapted for cyclic opening and closing

Abstract: A two-cycle crankcase compression internal combustion engine for use in an outboard motor that facilitates the use of low quality fuels by providing a carburetor that discharges fuel directly into one of the transfer passages of the engine. The transfer passages and carburetors are disposed so that the carburetors may extend horizontally and permits the use of a plurality of carburetors, one spaced above the others.

Abstract: A valve system for the overhead valve type four-cycle engine disposing the intake and exhaust valves substantially symmetrically to each other with respect to the cylinder center line, wherein the valve stems are so tilted in the cylinder head that the valve bodies are in juxtaposition close to the cylinder center line. Guide cams are disposed around the circumferential surface of the crank shaft, respectively return back to the same starting point while making two turns, and respectively have one projection in the course of the turn, for driving the intake and exhaust valves. Between the guide cams and the respective intake and exhaust valve, a sliding piece, push rod and rocker arm are provided, and the projection on each of aforesaid cam is designed to be placed at such a position as to engage with the sliding piece to the opening timing of the intake and exhaust valves.

Abstract: A cam unit comprised of at least two side-by-side cams acts against a follower rocker arm that operates either an intake or exhaust valve of an internal combustion engine. One cam is formed with sloping take-up ramp portions connecting with a lobe portion. The side-by-side cam (or cams) has a base circle portion that increases in diameter to form sloping take-up ramp portions connecting with an eccentric portion slightly larger in radius than the base circle portion. The lobe portion on the one cam projects a radial distance considerably greater than the eccentric portion (or portions). Different working surfaces on the follower arm are thus engaged by the cams to reduce erosion.

Abstract: An engine is disclosed in which two cylinders or guideways are mounted in a Vee or L formation with a reciprocable piston or crosshead in each. Connecting rods interconnect each reciprocable member to a crankshaft. Countershafts with balance weights thereon are referred to as balance shafts and these are driven at twice cranshaft speed in opposite directions and they serve to counterbalance the secondary reciprocating inertia forces. The balance shafts are mounted substantially parallel to the crankshaft instead of at right angles to the crankshaft as taught by Lanchester in a Vee machine. Thus, ordinary gearing can be used to drive the balance shafts instead of the skew gearing taught by Lanchester in a Vee machine. When the angle between the two cylinders is 90 degrees, only two not four balance shafts are required. When the machine has four cylinders in a 90 degree Vee, only two parallel balance shafts are required to serve all four cylinders. For some applications, three balance shafts are used.

Abstract: An oil sump 1 of an internal combustion engine has a recess 3, into which dips a suction funel 5 of an oil pump. The funnel is spaced slightly from the oil sump floor 7. A honeycomb-shaped insert 8 is positioned in the recess 3 at a slight spacing from the oil sump floor 7. The height b of the insert 8 amounts to a multiple of the spacing a from the oil sump floor and also a multiple of the side length c of the substantially square cross-section of the chambers 11 of the insert 8. As a result, the oil flowing back from the engine, which is strongly foamed with air because of the rotating motion of the crankshaft drive, can become de-foamed in the relatively high chambers 11, whereby the oil foam in the chambers 11 rises and air-free oil in the chambers drops down to the oil sump floor 7. This ensures that the oil pump, which is pumping out from the oil sump floor 7, essentially draws in air-free oil.

Abstract: A device for detecting low engine oil levels includes a mechanism for detecting the presence of oil in an oil containment vessel for an engine. A housing is disposed in the containment vessel for enclosing the detection mechanism. A chamber is disposed in the housing and is adapted to permit the free flow of oil therethrough for contact with the detection mechanism according to the level of oil in the containment vessel. The chamber further prevents surging of oil therethrough resulting from movement of the vehicle carrying the engine as well as intermittent splashing of the oil on the detection mechanism resulting from operation of the engine.

Abstract: A novel internal combustion engine has a single toroidal cylinder and a set of pistons, e.g. four, which are set in a circle and rotate in the toroid. The toroid can be interrupted by separating walls to form, with the pistons, compression or expansion chambers, so enabling four stroke e.g. Otto operation. The separating walls can be withdrawn and reinserted to allow the pistons to pass. Output is direct e.g. by a shaft in the center of a disc whose periphery carries the pistons.

Abstract: Vacuum operated apparatus for controlling the ignition timing of an engine, which apparatus comprises valve means and first, second and third conduit means, the valve means comprising a valve body, a first chamber, first and second port in the first chamber, first obturator means for opening and closing the second port, a second chamber, third and fourth ports in the second chamber, and second obturator means for opening and closing the fourth port, and passageway means which connects together inside the valve body the second and the third ports, the first conduit means being for connecting the first port to an engine inlet manifold, the third conduit being for connecting the third parts to an engine carburettor, and the second conduit means being for connecting the second and the fourth ports via the passageway means to an engine distributor arrangement, and the apparatus being such that in use the valve means receives first vacuum forces from the inlet manifold via the first conduit means and second vacuum

Abstract: An electronic and mechanical fuel feeding system comprises a mechanical fuel induction system coupled with an electronic fuel injection system through a diverter valve in fluid communication with a mechancial pump. The diverter valve includes a valve actuator responsive to an electrical signal to couple the inlet of the diverter valve with the outlet of the valve connected in fluid communication with electronically controlled injector nozzles. Alternatively, absence of an electrical control signal at the valve actuator causes coupling of the inlet of the diverter valve to a second outlet coupled in fluid communication with a mechanical carburetion system. In the preferred embodiment, the electronic fuel injection system comprises a control circuit responsive to changes in engine speed, manifold pressure, exhaust gas temperature and cylinder temperature so that accurately metered amounts of fuel are delivered by the injector nozzles to the engine cylinders.

Abstract: An induction system for an internal combustion engine for improving running throughout the entire engine speed and load ranges. The induction system comprises a first intake passage that serves the chamber through a first intake port and a second intake passage that serves the chamber through second and third intake ports. The effective cross-sectional area of the first intake passage is substantially smaller than that of the second intake passage and staged throttle valves are incorporated so that the charge requirements at low speed are supplied primarily through the first intake passage.

Abstract: A control system for a vehicle engine in which fuel supply quantity is controlled in accordance with the engine roughness level. An engine roughness sensor is provided for detecting engine vibrations and producing a roughness signal which is compared with a reference signal. When the roughness signal is greater than the reference signal, the fuel supply is increased to enrich the air-fuel mixture but, when the roughness signal is smaller than the reference signal, the fuel supply is decreased to make the mixture leaner. The reference signal is smallest in idling operation and stepwisely increased depending on an increase in the load on the engine.

Abstract: A fuel supply control method for an internal combustion engine. Sensors read out values for engine speed, intake pipe absolute pressure and exhaust pipe absolute pressure. These values are used to determine a corrected value of intake pipe absolute pressure which, in turn, is used to determine the amount of fuel to be supplied to the engine.

Abstract: In an apparatus for controlling an engine, as an air flow sensor for measuring intake air flow quantity, a heater resistor having temperature-resistance characteristic and a temperature sensitive resistor for sensing air temperature are provided in an intake passage, and heating electric power is supplied to the heater resistor in response to a start signal generated periodically. The heating electric power is cut off when the temperature of the heater resistor is raised to a specified reference temperature predetermined in accordance with the air temperature, so that an output signal indicative of the time width in which the heating electric power is supplied is applied to an electronic control unit to measure air flow quantity therefrom.

Abstract: In a fuel injection system for an internal combustion engine, the voltage of a vehicle-mounted battery is monitored to see if the voltage is below a predetermined voltage at which a microcomputer used in an electronic control unit is disabled or malfunctions on engine start where large current is consumed by a starter motor. During engine start, asynchronous fuel injection is performed using the result of the voltage monitoring in place of normal or main fuel injection. The amount of fuel to be injected by the asynchronous fuel injection may be limited and/or the number of times of asynchronous fuel injection may be limited so as to prevent excessive fuel supply. In monitoring the battery voltage, hysteresis characteristic may be given to a reference voltage so as to avoid undesirable chattering.

Abstract: A device for increasing an amount of fuel to be supplied to an engine includes a fuel increasing mechanism for supplying an added amount of fuel to the engine, and an electric control circuit including a low-temperature sensor for detecting a low temperature of the engine to produce a first signal capable of actuating the fuel increasing mechanism, and a neutral-gear-condition detector for detecting the neutral-gear-condition of a gear transmission associated with the engine to produce a second signal. The fuel increasing mechanism is inactivated in response to the second signal from the neutral-gear-condition sensor by overriding the low-temperature sensor to prevent the increase of fuel while the gear transmission is in neutral. A second embodiment employs additional sensors for air temperature, engine r.p.m., vehicle speed and the park-condition of an automatic transmission also for controlling the fuel increase.