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7299776 Valve assembly for an internal combustion engine  
A valve assembly for an internal combustion engine includes: at least two valves supported by a pair of valve stem holders; a bracket; a closing actuator for pivoting and closing the valves upon...
7171929 Method to estimate variable valve performance degradation  
A system comprising of an engine having a first group of cylinders and a second group of cylinders, a first variable valve system in said first group, a second variable valve system in said second...
7165391 Method to reduce engine emissions for an engine capable of multi-stroke operation and having a catalyst  
A method to control valves in a cylinder operating in a multi-stroke cylinder mode. Valves are controlled to improve engine emissions as operating conditions vary.
7059297 Stop control apparatus for internal combustion engine  
A stop control apparatus for an internal combustion engine is provided with a valve mechanism capable of operating at least one of an intake valve and an exhaust valve independently a crankshaft of...
6978748 Hydraulically controlled actuator for actuating gas exchange valve on the exhaust side of an internal combustion engine  
A hydraulically controlled actuator for actuation of an exhaust-side gas exchange valve of an internal combustion engine, containing a control piston that is displaceable within a cylinder and,...
6892714 Exhaust gas reflux apparatus for internal combustion engine  
An exhaust gas reflux apparatus for an internal combustion engine includes one-way connection means provided between an intake rocker arm and an exhaust rocker arm. The one-way connection means...
6823661 Diesel engine exhaust purifying device  
A device for purifying exhaust gas of a diesel engine equipped with a continuous regeneration type diesel particulate filter arranged in the exhaust gas passage of the engine. The device includes...
6810840 Internal combustion engine and method for the operation thereof  
In an internal combustion engine including cylinders with inlet and outlet valves, a first inlet valve drive having a first degree of adjustability for operating an inlet valve of at least one...
6705261 Multi-valve engine with gas exchange channel between inlet ports  
An intake valve phase shift in multi-valve engines to enhance air-fuel mixing and optimum combustion at all operating conditions. The intake valve members are independently operated by...
6701879 Internal combustion engine  
An internal combustion engine having at least one combustion cylinder that includes a combustion chamber provided with gas-exchange valves, and an electrohydraulic valve control device having valve...
6659056 Valve train with a single camshaft  
A valvetrain with a single camshaft is disclosed. The valvetrain has one or more intake valves, and one or more exhaust valves per cylinder of an engine block. The valvetrain comprises a cylinder...
6505589 Single cam three-valve engine overhead valve train  
A valve train layout for an overhead valve engine uses a single camshaft actuating two inlet valves and a single exhaust valve. The two inlet valves are preferably aligned on an inner side of a...
6502535 Valve timing and lift control system  
A variable valve timing and lift control system for an internal combustion engine is provided which comprises a first control mechanism for variably controlling a valve lift and an operation angle...
6453861 Valve gear of internal combustion engine  
In an internal combustion engine, a pair of suction ports are formed on left and right sides of the rear of the cylinder head with respect to the vehicle body. A pair of exhaust ports is formed on...
6390869 Four stroke engine with valve train arrangement  
A four stroke internal combustion engine includes a cylinder head having a valve train having reduced profile that permits access to a spark plug assembly located therein.
6257187 Pivot shaft for an internal combustion engine  
An internal combustion engine includes a housing with a plurality of combustion cylinders. At least one of the combustion cylinders has a longitudinal axis which is disposed at an acute angle...
6234126 Engine valve control  
An engine having a cylinder, piston having a skirt having an actuating member, a upper rocker-arm being pivotally coupled to the intake valve, a first push-rod, said being pivotally coupled to the...
6205966 Multicylinder internal combustion engine with two inlet valves and two outlet valves  
The invention relates to a multicylinder internal combustion engine with two inlet valves and two outlet valves (12, 11), the outlet valves (11) being located on one side of an internal combustion...
5960755 Internal combustion engine with variable camshaft timing and variable duration exhaust event  
A reciprocating four-stroke internal combustion engine includes a variable exhaust valve operating system for changing the duration of an exhaust valve opening event and also a camshaft drive for...
5884593 Head and overhead camshaft assembly for an internal combustion engine  
An overhead cam internal combustion engine having a slanted head design which permits the camshaft assembly comprising a camshaft, rocker arms and valve assemblies to be pre-assembled to the head...
5787849 Valve timing phase changer  
A variable phase valve timing assembly for an internal combustion engine. A camshaft driven by a rotating crankshaft of the invention actuates an intermediate member such as a pivotally mounted...
5706769 OHC engine  
A single overhead cam (OHC) engine is provided in which intake and exhaust valves and intake and exhaust cam followers are disposed on opposite sides of a single valve operating cam which is...
5690067 Arrangement for the operation of valves of internal combustion engine  
In an arrangement for operating the intake and exhaust valves of an internal combustion engine wherein valve actua-ting and coupling levers are pivotally supported in side-by-side relationship on a...
5606943 Four-cycle engine  
A gear 11 on a crankshaft 10 is made to engage with an internal gear 21 having twice the number of teeth of the gear 11, cams 22 are formed on the exterior surface of the internal gear 21, and the...
5564374 Cam carrier for an internal combustion engine  
A small four cycle internal combustion engine is disclosed having a cylinder head assembly which comprises a cylinder head cooperating with a cylinder block of the engine, and a rocker box...
5535710 Arrangement of valves and valve drives in an internal combuston engine having an overhead camshaft  
In an internal combustion engine there is provided a cylinder head; a plurality of cylinder head bolts for securing the cylinder head to a cylinder block; at least one engine cylinder; at least two...
5460130 SOHC-type valve operating system in internal combustion engine  
An SOHC-type valve operating system in an internal combustion engine having a single cam shaft commonly provided for a pair of intake valves and a pair of exhaust valves. A plurality of intake...
5398649 S.O.H.C. five valve engine  
A number of embodiments of single overhead camshaft five valve per cylinder internal combustion engines. The camshaft and valve operating mechanism is designed so as to permit a compact assembly by...
5363818 Valve operating apparatus in internal combustion engine  
In a valve operating apparatus comprising a drive rocker arm which is interposed between a cam shaft and at least an intake valve of intake and exhaust valves spring-biased in closing directions...
5293847 Powdered metal camshaft assembly  
A camshaft assembly comprising a shaft, a lobe, a gear, and a boss portion is disclosed. The lobe includes a first powdered metal and has a first density, while the gear includes a second powdered...
5267536 Four-stroke engine having an improved valve mechanism  
A four-stroke cycle engine unit for a working machine, for example, generally a valve drive mechanism for driving the exhaust and intake valves. The valve drive mechanism comprises a crank cam...
5253620 Internal combustion engine adjustable valve gear  
An adjustable valve gear is provided for two lift-type intake valves per cylinder in an internal combustion engine which are actuated by the cams of a camshaft via rocker arms with variable support...
5241928 Movable valve device for engine  
A valve moving device for a combustion engine wherein a hole engagement part pivotally mounts a rocker arm on a rocker shaft. The axial centerline of the hole engagement part is provided on a slant...
5235940 Engine valve driving apparatus  
The invention discloses a valve driving apparatus for use of an engine including an intake valve for opening and closing an intake port, an exhaust valve for opening and closing an exhaust port,...
5213074 Lubricating device of four-stroke cycle engine unit for portable working machine  
A four-stroke cycle engine unit for a working machine has generally a lubricating device for lubricating mechanical parts in a valve chamber and a cam chamber. The lubricating device comprises a...
5184579 Cylinder head structure of internal combustion engine  
First and second cam shafts arranged in first and second cylinder heads of a V-shaped internal combustion engine are respectively arranged so as to be offset toward the inner side of the internal...
5148781 Valve arrangements and cylinder heads for internal combustion engines  
The invention relates to a cylinder head (1) for an internal combustion engine provided with an asymmetrical overhead valve layout. The axes (2c, 3c) of the inlet and exhaust valves (2, 3) form the...
5101777 Automobile engine structure  
Several embodiments of V type internal combustion engines having multiple valves per cylinder and an overall compact arrangement. This is achieved by employing only a single camshaft for operating...
5060605 Valve drive mechanism for vehicle engine  
A valve drive mechanism for driving intake and exhaust valves of a vehicle engine comprises a cam shaft offset toward the intake valve, a first rocker arm driven by the cam shaft for opening and...
5042443 Multiple-valve internal combustion engine  
A valve placement arrangement for an internal combustion engine including four intake valves and two exhaust valves per cylinder wherein the exhaust valves are disposed across the combustion...
5027761 Valve operating mechanism for internal combustion engine with a spark plug insertion hole in a rocker arm holder  
An internal combustion engine includes a cylinder block having a cylinder bore, a cylinder head having a combustion chamber communicating with the cylinder bore, a spark plug supported in the...
4977863 Air-cooled internal combustion engine having canted combustion chamber and integral crossover intake manifold  
An air-cooled internal combustion engine, a crankshaft and a camshaft rotatably journalled in the crankcase parallel to one another, and a cast intake valve chamber and cast exhaust valve chamber...
4907554 Multiple intake poppet valve array for a single port  
A multiple intake poppet valve array for use with a single charge carrying intake duct to an engine cylinder in a four cycle internal combustion engine to include three or more annular intake...
4872431 Internal combustion engine with ceramics valves  
An internal combustion engines comprises at least one exhaust valve made of ceramics per each engine cylinder and a pluarality of intake valves made of steel. The relation in number and valve head...
4819591 Poppet valve assemblies  
According to the present invention there is provided a poppet valve assembly comprising a plurality of simultaneously operated poppet valve members slidably mounted for movement between their open...
4811699 Speed reduction device  
A speed reduction device for transmitting the rotation of a drive shaft to a driven shaft in a speed reducing manner. An eccentric cam is securely mounted on the drive shaft and has a central axis...
4796574 SOHC type internal combustion engine  
An SOHC type internal combustion engine wherein in a wall portion projectingly formed on a cylinder head and supporting a cam shaft is provided a bearing hole which supports a journal of the cam...
4773361 Overhead cam type four-valve actuating apparatus for internal combustion engine  
An OHC type internal combustion engine with four valves per cylinder in which a single cam shaft extending longitudinally is engaged by individual rocker arms for each valve for pivoting those...
4773360 Internal combustion engine  
Each cylinder of an engine is provided with a pair of intake valves and a pair of exhaust valves arranged opposite each other in a V-like pattern and are driven by an overhead camshaft having an...
4766866 Intake system for engine  
A compound induction system for an internal combustion engine embodying at least two intake passages serving each combustion chamber. A throttle valve arrangement is incorporated for controlling...
Matches 1 - 50 out of 72 1 2 >