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WO/1995/004210A1 |
A four stroke petrol engine is disclosed with at least one cylinder and for each cylinder a desmodromically controlled inlet valve (10, 11) and at least one desmodromically controlled outlet valve; at least one inlet duct (13) is assigne...
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WO/1995/002116A1 |
A variable control process and device for an internal combustion engine valve are disclosed, in particular for the throttle-free power circuit control of a spark ignition engine by means of the lifting function of one or several inlet va...
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WO/1995/000748A1 |
An apparatus and method effects the cyclical actuation of an actuation member. The method employs an apparatus that can be driven by a crankshaft and has at least one dual-acting phasing apparatus that includes at least three rotatably m...
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WO/1995/000751A1 |
Valve mechanism in an internal combustion engine with transmission means disposed to selectively open the engine exhaust valves (5) during the intake stroke to permit exhaust to be drawn into the cylinders during the intake stroke. The t...
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WO/1994/028290A1 |
A valve control apparatus particularly suited for a diesel engine brake. There is an hydraulic actuator (20) having a piston (26) which contacts the valve stem (16) of an exhaust valve (14). The actuator (20) is independent of the exhaus...
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WO/1994/025740A1 |
Exhaust valve mechanism with a rocker arm (1) having a hydraulic circuit with a hydraulically operated valve play absorbing piston element (7). The hydraulic circuit contains a piston pump (20, 21) housed in the rocker arm and which is d...
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WO/1994/025741A1 |
A two-part tappet is designed to be adaptable to different cam contours. Radial bores (12, 11) are provided in the base sections (2, 3) and house at least one radially mobile piston (13) for connecting the sections (2, 3).
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WO/1994/021899A1 |
The present invention provides valve control means for use in an internal combustion engine which has valve means (180), cam means comprising a rotatable camshaft (185) having a first portion (181) and a second portion (182) having a dif...
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WO/1994/021897A1 |
A valve operating system for an internal combustion engine (1), which includes a cam shaft (8) actuated floating lever (40) having a cam surface (41) acting on a push rod (18) of a valve assembly (5), the position of the push rod (18) on...
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WO/1994/019585A1 |
A mechanism for controlling the duration of the opening of the intake valve of an internal combustion engine which includes a split cam (41, 42) having a first lobe (41) which is fixed to a primary cam shaft (25) that is drivingly connec...
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WO/1994/016202A1 |
The invention relates to a device for the variable control of the valves of internal combustion engines, especially for the chokeless load control of four-stroke engines in which the mixture is metered by controlling the travel and openi...
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WO/1994/016203A1 |
The present invention describes a facility for the relative rotation of two camshafts to control internal combustion engines, especially to reduce the load variation losses in piston-operated four-stroke engines. The invention makes it p...
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WO/1994/015075A1 |
The device comprises a type of cam with deformable and/or displaceable profile using an incompressible pressurized fluid (liquid) with calibrated channels and/or throttling passages, which allows the advance or delay in timing of the ope...
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WO/1994/013935A1 |
For a valve control (26) of an internal combustion engine shown in Fig. 3, in which a camshaft (29) with control cam (30, 31) acts on a valve (27, 28) via a transmission element (33), the position of the contact path (32') of which on th...
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WO/1994/011632A1 |
A knocking noise avoiding device for an engine with a variable valve driving mechanism for securely preventing erroneous ignition timing lag process due to valve seating noises from a valve driving system of the engine with a variable va...
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WO/1994/011628A1 |
A fuel controlling device for an engine with a cylinder idling function comprising valve operation switching means (KL, KH) capable of selectively switching at least one of intake and exhaust valves from an operating state to a non-opera...
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WO/1994/008129A1 |
A valve-actuating mechanism for a multicylinder internal combustion engine has, for each inlet valve (E) of a cylinder, a low engine speed cam (2) and a high engine speed cam (8). A first drag lever (4) cooperates with the low engine spe...
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WO/1994/003709A1 |
In a valve operating system for an internal combustion engine, a pull-rod or rocker (1) which engages on the one hand with a gas valve (5) and on the other is supported on the cylinder head (3) is actuated by a cam (7) via an intermediat...
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WO/1994/002713A1 |
A valve-actuating mechanism for a plurality of identical valves of a cylinder of an internal-combustion engine has first drag levers (5) which each actuate a valve and which are actuated by a cam for a lower speed range, and second drag ...
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WO/1994/000679A1 |
The invention relates to a process for controlling the operating cycle of an internal combustion piston engine and an engine (1) for carrying out said process. The engine has an intake system (5), an exhaust system (6) and valves in each...
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WO/1993/025803A1 |
A method for engine retardation with a multi-cylinder combustion engine, which for each cylinder with matching piston has an exhaust valve for control of the connection between a combustion chamber (4) in the cylinder and an exhaust syst...
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WO/1993/025808A1 |
An internal combustion engine (12) for portable power generating equipment includes a camshaft assembly (48) having an integral oil pump (56) at one end thereof. The camshaft (50), which is preferably formed of two dissimilar materials, ...
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WO/1993/024741A1 |
Starting systems for use with internal combustion engine have in the past used a variety of add on mechanical mechanisms to provide cold starting. Many of these systems fail to provide the option of controllably and modulatively varying ...
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WO/1993/024739A1 |
Systems to optimize breathing have been used with internal combustion engines in the past and used a variety of mechanical mechanisms to improve breathing and combustion. Many of these systems fail to provide the option of controllably a...
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WO/1993/024738A1 |
Braking systems for use with internal combustion engine have in the past used a variety of mechanical mechanisms to activate the braking system in addition to the conventional cam, lifters, pushrods and rocker arms. Many of these systems...
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WO/1993/022585A1 |
A ceramic-metal composite structure which minimizes tensile ceramic loads and accomodates differences in thermal expansion characteristics between a metal member (11) and a ceramic member (12) without reliance on precise feature control ...
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WO/1993/022543A1 |
Drives for gas exchange valves, preferably inlet valves of reciprocating internal combustion engines, have the following structure: two cams (21; 22) having different movement characteristics are arranged on a camshaft (2) as associated ...
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WO/1993/021427A1 |
A valve actuating mechanism for the inlet valves (E) of a cylinder of an internal combustion engine has first drag levers (6), each operating an inlet valve (E) and actuated by a cam (2, 3 or 4), for a lower rotation speed range, and sec...
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WO/1993/021437A1 |
The present invention relates to an improved fluid vaporizer for use in conjunction with an internal combustion engine comprising intake (18) and exhaust (120) valves, each of the valves including seats (148, 132). An exhaust valve seat ...
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WO/1993/020337A1 |
A damping mechanism for a lost motion hydraulic actuator utilizes a thin edge orifice (66) in cooperation with a communication passageway (62) between the upper (46) and lower (48) chambers and controls the damping of the upper piston (3...
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WO/1993/018284A1 |
In order to selectively hydraulically connect or disconnect a cam-controlled valve (19) in a cylinder head (1), pistons (14) that can be radially moved by the oil pressure and that are provided with blocking elements (15) are arranged in...
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WO/1993/017227A1 |
An actuating mechanism for three inlet valves of a cylinder of an internal combustion engine has three first finger levers (6), each of which actuates an inlet valve (E) and is actuated by a cam (2, 3, 4) for a lower revolution speed ran...
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WO/1993/013311A1 |
An automobile engine (E) capable of changing over the operating area thereof between an operating area with all the cylinders being in action and one with a certain number of cylinders being at rest by stopping the operation of valve ope...
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WO/1993/008377A1 |
The invention concerns a device for actuating the valves in an internal-combustion engine by means of a came drive, the device comprising a housing and a cam connected to the housing so that it can rotate. Also fitted is a drive element ...
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WO/1993/003261A1 |
The device according to the present invention comprises a kind of cam with a shape being deformable and/or removable by means of a fluid under pressure, that allows the variation in advance or in delay of the opening and/or of the closin...
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WO/1992/019846A1 |
The invention is an improvement upon an engine valve operating mechanism having a cam with a rotational axis and a lobe high point, a movable control surface and a cam follower. In the improvement, the follower (27) has a cam-contacting ...
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WO/1992/019847A1 |
A control mechanism (1) for an engine valve (29) comprising two rotatable cams (8, 10) which engage a lever (2) at two follower regions (23, 34) at different positions, the lever (2) having a zone of application (35) linked to the valve ...
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WO/1992/013178A1 |
A combination, in an expansible chamber engine having at least one cam driven piston (174), of a piston drive cam (18) profile that alternately drives the piston to a higher or lower top dead center TDC position producing different expan...
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WO/1992/012332A1 |
Two-stroke engine including at least one cylinder (1) in which a piston moves delimiting a combustion chamber (4), a crankcase-pump (5) located at one of the cylinder ends and separated from the combustion chamber (4) by said piston (3),...
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WO/1992/012333A1 |
In the invention disclosed, the valves (3) of a reciprocating piston engine are actuated by a camshaft (1) with fixed cams (4) rigidly mounted on the camshaft and control cams (8) connected to the shaft by radial pins (10) which are moun...
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WO/1992/009793A1 |
A means of varying both the opening and closing angle of internal combustion engine cam-operated valves (13) by means of a mechanism which responds to the torque applied to the camshaft (5) by the valve springs (14) in such a way that th...
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WO/1992/009792A1 |
The invention relates to an internal combustion engine with compressor function. One or more of the cylinders of the engine has an extra exhaust valve (11, 12) in the cylinder head. The engine has a fuel injection system with electric un...
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WO/1992/006282A1 |
A driving connection between a hollow camshaft (1) and its driving shaft (5) located within it, the axes (3, 8) of these two members being parallel but laterally displaceable to vary the characteristics of rotation of the camshaft in res...
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WO/1992/004531A1 |
The hydraulic valve tappet (4) described has a high-pressure valve (20) through which an electroviscous fluid flows in response to the application of an electric voltage, thus displacing a piston (26) linked to an engine valve (5) so tha...
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WO/1992/002712A1 |
A valve control arrangement for opening and closing the valves in, for example, an internal combustion engine comprises an electrically powered magnetic valve drive (9-14). A sensor (17) is provided for monitoring actual valve position. ...
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WO/1992/001144A1 |
A means of varying both the opening and closing angle of internal combustion engine valves by means of a mechanism which varies the instantaneous phase of the camshaft with respect to the phase of the crankshaft so causing the cam to spe...
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WO/1991/016527A1 |
A valve mechanism in an internal combustion engine, wherein a driving rocker arm interlockingly connected to an air intake valve and a free rocker arm capable of becoming independent of the air intake valve are interposed between a cam s...
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WO/1991/013241A1 |
A device for varying steplessly, throughout the operating range of an internal combustion engine, the duration of the processes of induction and exhaust, and the lift of the valves associated with these processes; the device employing, w...
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WO/1991/012415A1 |
The invention relates to cam mechanisms for controlling valve means and in particular to cam mechanism for controlling the inlet and/or exhaust valve of an internal combustion engine. The cam mechanism comprises cam shaft means (10) havi...
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WO/1991/012413A1 |
The invention relates to valve control means for an internal combustion engine. With reference to Figure 1 of the drawings, the valve control means comprises valve means (10), cam means comprising a camshaft (30) having a first cam membe...
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