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WO/1993/023658A1 |
An air suction device for an internal combustion engine has a suction distributor (1) connected to combustion chambers by individual suction tubes (2) and into which fresh air flows over a suction line (4) connected to a first opening (3...
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WO/1993/020341A1 |
An exhaust system for an internal combustion engine having an exhaust port (14), an exit port (15) and an exhaust chamber (10) communicating between the ports (14, 15), comprising variable dimension means (16) in the exhaust chamber (10)...
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WO/1993/016272A1 |
An intake system for a reciprocating internal combustion engine adapted to control operation of the engine to produce a high level of torque across a wide range of engine revolutions. The intake system is formed by a plenum (3) feeding a...
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WO/1993/010339A1 |
A dynamically variable exhaust system provides for maximum efficiency of an internal combustion engine (30) by including an exhaust control device (35) which is operated by a control mechanism (33) and managed by a control unit (32). The...
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WO/1993/007375A1 |
The device has a generally cylindrical chamber (24) with a fluid inlet (28) in an end wall and a fluid outlet (30) in the sidewall. Fluid introduced into the device via the inlet passes through a venturi (34) before being discharged into...
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WO/1993/003264A1 |
An exhaust system for a two-cycle internal combustion engine provides for maximum efficiency of the engine by swingably displacing the baffle member (42) about pivot point (40) to vary the effective volume of baffle chamber (38). Additio...
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WO/1993/000505A2 |
The present invention provides in all aspects an intake manifold (10) for an internal combustion engine having a plenum (22) to be filled with combustible charge and inlet passage means (27) serving in use of the manifold (10) to connect...
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WO/1992/022737A1 |
An intake system for an internal combustion engine has a plurality of intake tracts (10, 12, 14 and 16) connected in use to extend from indidvidual engine intake ports to a common plenum chamber (18) and a common passage (20) opening int...
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WO/1992/022738A1 |
The invention relates to an engine manifold having a plurality of branches connecting respective engine ports to ambient air. Each branch of the manifold is connected to pass through an acoustic coupling (10) formed by a chamber (12) of ...
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WO/1992/020908A1 |
A two-stroke cycle internal combustion engine (10) having a cylinder (21) with a piston (41) within the cylinder (21) defining a combustion chamber (48), as well as a charging chamber (49). Radial inlet ports (31) formed in the cylinder ...
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WO/1992/018759A1 |
An exhaust control system having a plurality of exhaust manifolds (18, 20, 22, 24) configured and arranged such that combustion of exhaust gases flowing therethrough is uninhibited to the extent that the concentration of all of the three...
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WO/1992/014914A1 |
An exhaust gas control system for connection to an inlet port of a cylinder (2) of a spark ignition engine. The control system comprises a plenum chamber (8) having an air input port and an air output port (4) connected to the cylinder i...
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WO/1992/007181A1 |
A Helmholtz resonator is disposed interiorly of a gas-carrying conduit to attenuate noise passing through the conduit. The Helmholtz resonator encloses a volume that is communicated to the gas flow by a through hole in the wall of the en...
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WO/1992/004535A1 |
The invention concerns a method of operating an internal-combustion engine, in particular a vehicle engine, in which air is fed to the combustion chambers through an induction manifold in which different induction-pipe lengths and/or vol...
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WO/1992/003639A1 |
A header assembly for an internal combustion engine (51) including a pair of header pipes (62, 61) having discharge ends, a collector (81) mounted on the discharge ends and having a housing directing exhaust gas pulses (94, 91) from both...
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WO/1991/013243A1 |
A control system is described for improving continuous dynamical control on the pressure in the outlet or inlet system (3) or both of a machine (1) in order to control the performance of the machine. The system comprises an actuator (4) ...
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WO/1991/010817A1 |
Exhaust system for internal combustion engines whose purpose is to take advantage of the energy normally wasted by the engine, in order to create vacuum inside the pipes (1) at the moment the exhaust valve opens. Vacuum which will suck o...
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WO/1991/000419A1 |
A suction pipe arrangement for a multicylinder internal combustion engine with two banks of cylinders in V formation has a cylindrical intake manifold chamber (2) from which first individual suction pipes (3a-3d) extend to the first bank...
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WO/1990/010144A1 |
An internal combustion engine has two differently tuned sets of runners leading to the cylinders. A wave deflector element (42) transversely spans a particular runner for one cylinder and the corresponding particular runner for an adjace...
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WO/1990/002869A1 |
The invention relates to a manifold system for an internal combustion engine comprising a shutter (22) serving as an externally controlled source of pressure waves disposed within a tract (10) and activated at a predetermined time preced...
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WO/1989/004420A1 |
An improved exhaust port throttling mechanism for a two-stroke engine. The engine includes a plurality of in-line cylinders (2) each having an exhaust passage (5) disposed to be closed during reciprocating movement of the piston. The exh...
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WO/1989/003473A1 |
A compact high inertia engine intake system is described for an internal combustion engine achieving near optimum breathing over most of the engine's speed range even with fixed valve timing. The internal combustion engine has two or mor...
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WO/1988/010362A1 |
An exhaust port throttling mechanism for a two-stroke engine. The engine includes a plurality of in-line cylinders (2) each having exhaust port means (5) disposed to be closed during reciprocating movement of the piston. The engine block...
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WO/1988/010361A1 |
An exhaust outlet conduit for internal combustion engines and adapted to function as a resonator for exhaust waves exiting from the cylinder or cylinders to which the conduit is connected. The conduit (4) is characterized by a combinatio...
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WO/1988/001340A1 |
Intake tubing (1) for a combustion chamber (2) having an intake valve (4) for intermittently burning the fuel-air mixture taken in. The cross-section and/or the length of the intake tubing (1) can be modified so that the cross-section or...
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WO/1987/007926A1 |
A manifold (10) for a bank of four cylinders of an engine, comprises four primary tracts (20, 22) each leading to a respective cylinder and two secondary tracts (24, 26) each connected at a respective one of two branching points (16, 18)...
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WO/1987/005965A1 |
A suction port means, wherein a suction port (9) consisting of a straight portion (13) and a spiral portion (15), a valve (17) to be opened and closed being provided close to said suction port (9), the closed position of said valve (17) ...
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WO/1987/004218A1 |
A control equipment for pulsation in a suction-exhaust system of internal combustion engines, including two-cycle gasoline engines, four-cycle engines, rotary piston engines etc., comprising a means for detecting pulsations in suction-ex...
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WO/1986/003256A1 |
An exhaust system for a multi-cylinder internal combustion engine has a tailpipe (13) which is divided by a partitioning wall or walls (14, 15) into separate channels extending at least part-way of the tailpipe from its inlet end and wit...
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WO/1986/001857A1 |
A device for accelerating gas flows by means of kinetic energy or wave energy, particularly for exhaust and/or inlet systems of internal combustion engines, comprises a hollow body (10, 11) with a tubular inlet connector (12) and a coaxi...
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WO/1985/004689A1 |
A two-stroke internal combustion engine (5) having a transfer port (9) and an exhaust port (8) in a cylinder (6) which are opened and closed in a timed relationship by the reciprocating movement of a piston (7). The exhaust port (8) comm...
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WO/1984/004781A1 |
Low pressure pulses are generated intermittently in the exhaust gases in the exhaust-silencer system of the engine, to produce a standing wave of alternating high and low pressure. This is achieved by means of a turbulence unit designed ...
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WO/1982/002925A1 |
An exhaust system for an internal combustion engine having a number of cylinders, comprising a primary exhaust pipe connected to the exhaust port of each cylinder, characterised in that there is a secondary exhaust pipe (20, 22, 24 or 26...
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WO/1982/001742A1 |
The supercharging method by intake oscillation in piston engine is based on a symetric and pneumatic resonance oscillation of the suction circuit (fig. 7), wherein gas masses (2, 4) determine essentially the proper vibration of the oscil...
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WO/1981/000594A1 |
The inlet supply manifold for a combustion engine with four or six cylinders in line comprises a distribution chamber (2) and two symmetrical groups of individual inlet pipes having approximately the same length (3, 4, 5, 6, 7, 8 and 9)....
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WO/1980/000167A1 |
An exhaust system distinguished by a low content of passing through impurities and a low sound level and being intended for a pulsating heat source, especially an internal combustion engine. The exhaust gases from the different cylinders...
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JP2024051687A |
An object of the present invention is to provide an internal combustion engine that increases fuel efficiency and output as much as possible by changing compression ratio and output characteristics according to the alcohol concentration ...
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JP7465558B2 |
A problem to be solved is to provide an exhaust promotion method, an exhaust promotion device, and an exhaust system improvement method for an internal combustion engine capable of further improving the exhaust efficiency by high-speed e...
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JP2023164838A |
To improve intake fluid dynamics.An internal combustion engine 8 intake system 4 comprises: an air conveyance duct 12 extending from an air inlet opening 16 to an air outlet opening 20 and delimiting a conveying volume; and 'n' inlet tru...
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JP7367545B2 |
To achieve appropriate torque according to an engine speed without worsening a travel feeling.An intake system includes a fixed funnel (42) for guiding air to an intake port of an engine, a movable funnel (52) movable along the fixed fun...
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JP2023127024A |
To provide an intake system structure for an engine having a simple and compact configuration and including an impulse valve enabling highly reliable intake pressure control.In an intake system structure for an engine 1 including an impu...
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JP7290424B2 |
To provide an inexpensive and compact intake control device capable of realizing a plurality of actions with a single power source.An intake control device 1 comprises: a regulation flow passage 8 with a valve body 5 regulating an intake...
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JP2023049923A |
To provide a variable air funnel device capable of securing a required amount of change of a funnel effective length for optimizing an output characteristic even when a stroke amount of a movable funnel is small, and capable of reducing ...
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JP7241120B2 |
To provide a variable air funnel structure which decreases a power consumption amount of an actuator for driving a variable funnel, and improves the durability of the actuator.A variable air funnel structure comprises an air cleaner 12, ...
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JP7159645B2 |
To increase engine output in a medium-to-low-speed area and a degree of freedom of an engine layout with a simple structure in a motor-cycle mounted with a multi-cylinder engine.An engine exhaust device comprises: a plurality of exhaust ...
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JP6990223B2 |
To provide a variable intake device for a V-type internal combustion engine, which shortens the length of a funnel in a shortened state and improves the intake efficiency of the internal combustion engine at high rotation speed.A variabl...
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JP6979238B1 |
To provide an exhaust promotion method, an exhaust promotion device and an exhaust system improvement method of an internal combustion engine capable of further improving the exhaust efficiency by high-speed exhaust of exhaust gas. The e...
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JP6864576B2 |
To provide an air cleaner of a motorcycle which can rigidly fix a filter in a cleaner box without using a fastening member such as a screw in the cleaner box.An air cleaner 11 comprises: a case main body 41; a lid body 42 for closing the...
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JP2021017803A |
To solve the problem that although an intake amount of air needs to be increased to improve fuel economy of an engine, an engine with a turbocharger needs to control an intake amount in coordination with a rotation speed of the engine.In...
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JP6825310B2 |
An intake device includes: an intake port; and a valve body which is disposed in the intake port and is rotated around a rotation axial line between an open/closed position, in which the valve body includes a valve body main body made of...
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