Abstract: The valve drive of an internal combustion engine has sliding cams which are pretensioned and displaceable axially on a camshaft. The sliding cams are displaceable from a first position in which they act by a first elevation curve on intake valves into a second position in which they act by a second elevation curve on the intake valves. The sliding cams in the first position positively abut a stop of a transfer element connected between the intake valves and the sliding cams, so long as they travel with a segment in the vicinity of the stop. When the base circle of the sliding cams is reached, the sliding cams are displaced into the second position.

Abstract: Several embodiments of internal combustion engines having at least five valves, three intake and two exhaust, all operated by a single camshaft. The intake valves are disposed so as to provide a smooth combustion chamber configuration by minimizing the difference in-angle between the valves and the valves and rocker arms are arranged so that different degree of lift may be provided. All of the intake valves have the same stem length. One rocker arm operates one valve and another rocker arm operates two valves with the two valves being operated being differently configured so as to provide the desired different lift. In addition, a staged intake system is included that has a single intake passage that extends perpendicular to a plane containing the cylinder bore axis and serving one intake valve and a siamese intake passage serving the other intake valves. The siamese intake passage has a section that extends also perpendicularly to the plane.

Abstract: A fuel delivery control apparatus for use with an internal combustion engine having a throttle valve located in an induction passage for controlling the amount of air to the engine. The engine is associated with an evaporated fuel purging unit having a canister adapted to accumulate evaporated fuel from a fuel tank. A basic value of the amount of fuel metered to the engine is calculated based on the sum of the amount of air supplied to the engine through the throttle valve and the amount of air supplied to the engine from the canister. The basic value is corrected by subtracting the amount of evaporated fuel introduced from the canister to the engine from the calculated basic value. The fuel metered to the engine is controlled based on the corrected basic value.

Abstract: A valve control apparatus and control for one of two intake valves in an overhead camshaft type engine having end pivoted rocker arms and combustion chambers each with two intake valves. The engine's cylinder head has a bore extending beneath the intake valve lash adjusters and has a shaft rotatable in the bore whereby in a first position the shaft supports all of the lash adjusters and in a second position, shaft eccentrics allow movement of the abutting lash adjusters so that the associated valve will not be activated. Consequently, the combustion chambers of the engine can operate with two functional intake valves or alternately with one functional intake valve and one non-functional intake valve.

Abstract: A new type of payment card includes a magnetically controlled display for visually reading magnetically recorded information such as current balance or available service value of the payment card. The required electronic and mechanical interface can be added to existing payment card handling equipment.

Abstract: On the rotary drive shaft of a four stroke engine is non-rotationally mounted a hub supporting four cylinders wherein pistons are arranged for reciprocal movement radially towards the hub. The hub is providing with a combustion chamber having common inlets and outlets formed in a valve ring rotating together with the hub and sealingly abutting against a stationary port ring having intake and exhaust ports communicating with inlet and outlet channels arranged alternatingly to assume a position in registry with the inlets and outlets associated with the respective combustion chamber. One spark plug for each combustion chamber is arranged to rotate with the hub, with the spark plug electrode end projecting into the associated combustion chamber opposite the common valve ring inlets and outlets.

Abstract: An engine shut-down circuit for a gaseous fuel induction system comprises a solenoid operated three-way valve connected to the electrical system such that when a shut-down condition is sensed, a vacuum signal from the intake manifold is sent to a pressure regulator, causing its internal fuel port to automatically close despite the presence of a residual negative pressure fuel supply signal which would otherwise keep the regulator open, thereby shutting off fuel supply instantaneously, despite continued rotation of the engine, thereby preventing fuel from being inducted into the engine which, if present upon restarting, would likely cause pre-ignition or backfire.

Abstract: The supply device with built-in pipework comprises an air distributor/manifold module with a casing and a base element made from plastic or metal and which are fixed to one another. The base element has pipework branches emerging in the casing and in a flange for fixing on to the engine. The casing houses sensors and members for controlling operating parameters of the engine as well as a fuel rail and its regulator supplying injectors which are trapped between the base element and the casing. Components of the air, fuel, ignition and electrical supply circuits are built into the pipework.

Abstract: A valve operating mechanism for internal-combustion engines has a valve and a pressure spring which is to move the valve into a closed end position and which is supported on a spring plate. For the reduction of the valve operating masses, at least the valve, the pressure spring and the spring plate are optimized with respect to their weight. The spring plate consists of a plastic material and has widenings of the cross-section for absorbing the occurring stresses.

Abstract: ABSTRACT A solenoid valve is provided in a fuel injection pump fuel supply path. A communication path communicates with each other an armature chamber, which accommodates an armature, and a spill chamber, which accommodates a head of a valve body and is connected to a lower pressure side. When high pressure fuel is spilt to the low pressure side, an orifice in the communication path reduces a high frequency pressure wave propagated from the spill chamber to the armature chamber, thus reducing deformation or corrosion of the solenoid in over a long period of use.

Abstract: A follower for translating rotational motion of a cam into reciprocal motion of an intake or exhaust valve is disclosed. The follower comprises a first portion adapted to be pivotably mounted on a follower shaft and a second portion adapted to contact a cam surface. The first and second portions form a generally V shape. The first portion includes a bottom and a pair of side walls connected to the bottom. Each of the side walls has a hole therethrough, and the holes are coaxially aligned to accept the follower shaft. The second portion includes a first end connected to the first portion and a second distal end which contacts the cam surface. Also disclosed is a method of making a follower from common sheet metal.

Abstract: A valve system for an internal combustion engine capable of changing the valve timing and valve lift of the intake and exhaust valves driven by rocker arms and overhead camshafts. A cam support member is pivotally mounted to the engine head and is positioned by a gear segment mounted to the camshaft support member in combination with a drive including a worm gear and a servomotor located on an engine block. The camshafts are driven by the crankshaft coupled with an idler gear. The idler gear is coupled with the camshaft gears through reduction gears, reducing the overall size of the drive and allowing flexibility as to valve timing.

Abstract: A diesel engine hydraulically-actuated, electronically-controlled unit injector fuel injection system is provided with a two-stage pump system including two parallel pumps for supplying actuating fluid to the injectors. The first stage pump of this two-stage pump has a capacity which is adequate for most operating modes. The second stage pump is used for starting and for high engine load situations. The second stage pump is controlled by a solenoid bypass valve that switches in the second stage pump when the pressure in the high pressure rails fall below a desired or programmed level. An embodiment of this invention includes a second bypass circuit having a fast-response, solenoid-actuated bypass valve that bypasses all of the flow from both stages between injections and thereby produces a pulsed flow of actuation fluid to produce the required pressure for each engine fuel injection while unloading the pumping system between injections.

Abstract: An engine comprising a first intake valve and a second intake valve that are arranged on each side of a plane including the axis of the cylinder of the engine. A first intake passage and a second intake passage are connected to the combustion chamber via the first intake valve and the second intake valve, respectively and extend along the plane in the same direction. A first fuel injector is arranged in the combustion chamber to inject fuel toward a region of the combustion chamber, which is located on the first intake valve side of the plane. A second fuel injector is arranged in the second intake passage to inject fuel into the second intake passage.

Abstract: The invention relates to an adjustable force transmission arrangement in a big diesel engine for accomplishing force transmission from a crankshaft (9) of the engine by means of gear wheels to at least one camshaft (11). The arrangement includes a first gear wheel (1), which is in connection with the force transmission of the crankshaft (9), and a second gear wheel (2), which is in connection with the force transmission of the camshaft (11), said gear wheels (1,2) being arranged adjacent to each other and arranged in force transmitting connection with each other through a friction surface (5). In accordance with the invention the arrangement comprises a guiding element (3), which is supported by means of a separate slide bearing element (7) to the engine block (6) so that it is guided both in the radial and in the axial direction.

Abstract: A lubricating system for an engine and particularly for a two cycle crankcase compression internal combustion engine wherein the amount of lubricant supplied by a reciprocating pump to the engine is varied by selectively delivering lubricant to the engine and bypassing lubricant from the pump back to the inlet side of the pump. The total amount of lubricant supplied is controlled by setting a duty ratio at the beginning of a control cycle and varying the time of the control in response to engine condition sensed during the control cycle so as to provide good transient control.

Abstract: An evaporative fuel-processing system for an internal combustion engine, in which a first control valve is arranged across an evaporative fuel-guiding passage extending from a fuel tank to a canister, a second control valve across a purging passage extending from the canister to the intake system of the engine, and a third control valve at an air inlet port of the canister, respectively. An ECU generates operation command signals to the first to third control valves for closing or opening the same. The ECU is responsive to an output from a tank internal pressure sensor which detects pressure within the fuel tank and the operation command signals, for detecting an abnormality in operation of a predetermined one of the first to third control valves.

Abstract: An evaporative emission control system provided with a vapor-liquid separation chamber in which a liquefaction accelerating agent is filled for forcibly liquefying and separating the high boiling ingredient contained in evaporative emission and vaporizing the liquid fuel effectively when the evaporative emission is purged, thereby lightening the burden imposed on the adsorbents and preventing the deterioration of the adsorbents so as to make the canister small while keeping the adsorbent properties. It comprises a vapor-liquid separation chamber formed in the canister, a liquefaction accelerating agent which is fibrous or long strip-shaped and filled in the upper portion of the vapor-liquid separation chamber, a fuel storage chamber disposed at the lower portion of the vapor-liquid separation chamber for storing the separated liquid fuel and an adsorbent accommodating chamber which communicates with the vapor-liquid separation chamber.

Abstract: A supplemental gaseous fuel system is provided for retrofit to an existing diesel engine having a conventional load sensitive speed control. The supplemental gaseous fuel system operates independently of the load sensitive speed control thus enabling the diesel fuel supply system to rapidly react to load transients. A control system senses a physical position of an actuator mechanism in the diesel fuel injector pump and opens and closes a buffer valve in response to predetermined positions of the actuator. In normal operation of the engine, variations (increases) in engine load are initially corrected for by an immediate but momentary increase in diesel fuel to the engine. However, as soon as the engine has responded to the increase in diesel fuel and increased its rate of combustion, the gas flow to the engine is increased and causes the diesel fuel actuator to approach a minimum fuel setting.

Abstract: A fuel injector system designed to generate an ultra-high, injection pulse with an instant cut-off, the injector system including a distributor component for distributing high pressure fluid from a fuel supply to a fuel injector component and a connected booster component in which the high pressure fuel is increased in pressure to an ultra high fluid pressure by a piston mechanism having large diameter and small diameter pistons. The high pressure fuel hydraulically lifts a needle valve and is ejected through discharge nozzles at the end of the injector component. High pressure fuel in the injector component forces the reseating of the needle valve after fuel discharge.