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| Number | Title | Issue Date |
| 7389754 | System for a two-stroke crankcase scavenged combustion engine The present invention relates to a system (1) for supplying an air-fuel mixture to a two-stroke internal combustion engine cylinder (2), comprising a carburettor (3) having a throttle valve (4) and usually a choke valve. The system furthe... | 06/24/2008 |
| 7357119 | Variable valve type internal combustion engine and control method thereof The operation modes of plural intake valves 7a and 7b provided in one cylinder is independently changed according to the drive region of the internal combustion engine. In the low air amount region, the intake airflow is controlled only w... | 04/15/2008 |
| 7353812 | Vehicle engine with integral vacuum generator An integral vacuum generator system for an internal combustion engine includes a throttle body and intake manifold defining a bypass passage which is connected with a vacuum manifold by both a venturi and a direct vacuum supply passage. Vacuum flow through the ventu... | 04/08/2008 |
| 7263985 | Exhaust emission control device in internal combustion engine and heat engine Catalyst is supported at least on a part of the combustion chamber wall of an internal combustion engine. A control is provided for controlling the fuel injection equipment of the engine so that pilot fuel injection is performed prior to main fuel injection under pr... | 09/04/2007 |
| 7174883 | Intake-negative-pressure-increasing apparatus for engine An intake-negative-pressure-increasing apparatus is disclosed, for use with an engine, and comprises a bypass passage extending from an intake pipe portion in the neighborhood of the throttle valve to an intake pipe portion downstream of the intake pipe portion in t... | 02/13/2007 |
| 7152559 | Valve and fueling strategy for operating a controlled auto-ignition four-stroke internal combustion engine Part load operating point for a controlled auto-ignition four-stroke internal combustion engine is reduced without compromising combustion stability through a valve control operative to establish low pressure conditions within the combustion chamber into which fuel ... | 12/26/2006 |
| 7150250 | Valve and fueling strategy for operating a controlled auto-ignition four-stroke internal combustion engine Low load operating point for a controlled auto-ignition four-stroke internal combustion engine is reduced without compromising combustion stability through a valve control operative to establish sub-atmospheric pressure conditions within the combustion chamber into ... | 12/19/2006 |
| 7140347 | Swirl forming device in combustion engine To provide an improved swirl forming device in a combustion engine, which is effective to promote a vigorous and massive swirling motion of the charge mixture within the combustion chamber, the swirl forming device includes an auxiliary passage (24) for intro... | 11/28/2006 |
| 7137381 | Indirect variable valve actuation for an internal combustion engine A reciprocating piston-type internal combustion engine includes an engine cylinder, an intake port, an intake runner providing a passage through which intake gas enters the cylinder through the intake port, an intake valve for opening and closing the intake port, an... | 11/21/2006 |
| 7128064 | Method and apparatus to provide oxygen enriched air to the intake manifold of an internal combustion engine This invention describes a method which can be used to improve the output torque and resulting horsepower of internal combustion engines while lowering the overall pollution experienced with these engines. This invention will allow smaller displacement engines to be... | 10/31/2006 |
| 7100588 | Device for heightening engine efficiency A device for heightening engine efficiency is provided with a heat-insulating seat of engine having a plurality of air inlets communicable with oil-gas inlets. The air inlets are provided with a valve, and the heat-insulating seat is provided with a cam mechanism, w... | 09/05/2006 |
| 7089908 | Control device and control method for direct injection engine A combustion control device and a method for a direct injection engine are disclosed wherein, when the engine is operating in the partial load range, the valve opening/closing mode of an intake valve and/or an exhaust valve is controlled so that exhaust gases remain... | 08/15/2006 |
| 6976464 | Semi-rotating valve assembly for use with an internal combustion engine The present invention is directed to a semi-rotating valve assembly that may be used in conjunction with an internal combustion engine. The semi-rotating valve of the present invention comprises a valve shaft disposed substantially within a valve housing, wherein th... | 12/20/2005 |
| 6928996 | Stratified scavenging mechanism of a two-stroke engine A stratified scavenging mechanism of a two-stroke internal combustion engine including a carburetor for supplying and controlling an air and fuel mixture to the engine, an air intake passage in which a throttle valve is disposed, an air passage provided on a scaveng... | 08/16/2005 |
| 6769396 | Diaphragm carburetor A diaphragm carburetor for an internal combustion engine that operates with scavenging is provided, especially for the two-cycle engine in a manually guided implement. The carburetor has a housing in which is formed an intake channel portion in which is disposed a b... | 08/03/2004 |
| 6726742 | Air cleaner with a secondary intake An air cleaner intake door is provided. An air cleaner with at least one sidewall and an opening defined in the sidewall has a door mounted over the opening. The door is rotationally movable between an open and a closed position and a cam extends from the door. A sp... | 04/27/2004 |
| 6481425 | Air quantity control for smooth switching in gasoline direct injection engine A gasoline direct injection engine is provided with a bypass air supply line. The bypass line is selectively opened to allow additional flow of air into the engine chamber during a transition phase. Air normally flows through a main air supply line throug... | 11/19/2002 |
| 6431141 | Secondary wide open throttle induction system The secondary wide open throttle induction system according to the invention includes a throttle body for use in an engine intake manifold having a primary intake and at least one secondary intake. The throttle body device associated with the secondary in... | 08/13/2002 |
| 6234155 | Adjustable trigger switch for nitrous oxide injection application A low power or current draw adjustable trigger switch and method and system for using the adjustable trigger switch in conjunction with a triggered accessory for an internal combustion engine, such as a feed from a source of compressed oxygen enhancer, su... | 05/22/2001 |
| 6067973 | Method and system for late cycle oxygen injection in an internal combustion engine A method and system for late cycle injection of oxygen enriched air into the combustion chamber of an internal combustion engine is disclosed. The late cycle oxygen injection system is part of an airflow management system that effectively controls the use... | 05/30/2000 |
| 5992400 | Gas delivery system of an internal combustion engine A gas delivery system in which air supplied to the internal combustion engine via a supplementary conduit is controlled. In the gas delivery system, the main conduit gas flow traveling through the throttle valve conduit is controlled by a throttle valve a... | 11/30/1999 |
| 5909728 | Air assist device of an engine An air assist device comprising a slit shaped air intake formed in the inner wall of an intake duct around a throttle valve. The assist air is taken in from the air intake ports. A downstream side edge portion of the opening of the slip shaped air intake ... | 06/08/1999 |
| 5797382 | Air assist device of an engine An air assist device comprising a plurality of air intake ports formed in the inner wall of an intake duct around a throttle valve. The assist air is taken in from the air intake ports. The amount of opening of the air intake ports is controlled by the ou... | 08/25/1998 |
| 5606951 | Engine air supply systems Disclosed is a method of controlling the air supply to an internal combustion engine having a means to throttle the air flow to the engine comprising determining the air demand in response to a driver initiated signal; determining an initial position of t... | 03/04/1997 |
| 5509397 | Air supply system preventing backflow A fuel injection system for an internal combustion engine having an air supply passage for supplying air to a point close to the fuel injection hole of a fuel injector to realize good atomization of the injected fuel. The system comprises an air supply pa... | 04/23/1996 |
| 5481462 | Apparatus for determining an altitude condition of an automotive vehicle An altitude determining apparatus for an automotive vehicle includes a calculating part for determining a reference flow rate based on a throttle angle of a throttle valve and an engine speed of an internal combustion engine of the vehicle, the throttle a... | 01/02/1996 |
| 5448974 | Engine output control An engine output control system incorporating two separate members that control engine output such as a throttle valve and fuel injection control, EGR control, secondary air control and/or spark advance control. A mechanism is provided for operating these... | 09/12/1995 |
| 5299548 | Carburetor with lagging bypass air valve An improved carburetor useful for reducing emissions of small gasoline powered engines commonly used to power lawnmowers and the like has a bypass air inlet and valve for venting amounts of fresh air into the fuel/air mixture to lean the mixture prior to ... | 04/05/1994 |
| 5207207 | Carburetor metering and hot air dilution system A carburetor metering system is provided comprising a fuel valve including a valve member movable with respect to a valve seat to vary the fuel flow, the valve member and the valve seat having substantially parallel inclined surfaces and which define ther... | 05/04/1993 |
| 5064423 | Acceleration aid for an internal combustion engine having an exhaust-driven turbocharger An auxiliary combustion air supply arrangement for an internal combustion engine having a combustion air supercharger driven by an exhaust gas turbine. During time periods characterized by lack of sufficient exhaust gas energy, in order to increase the su... | 11/12/1991 |
| 5000130 | Intake system for multi cylinder engine A number of embodiments of induction systems for internal combustion engines having plural combustion chambers with each being served by an intake passage having a respective throttle valve. First and second plenum chambers communicate with the intake pas... | 03/19/1991 |
| 4989563 | Auxiliary air amount control system for internal combustion engines at deceleration An auxiliary air amount control system for an internal combustion engine has an auxiliary air passage bypassing a throttle valve arranged within the intake pipe of the engine, and a control valve controlling the amount of auxiliary air supplied to the eng... | 02/05/1991 |
| 4699110 | Fuel supply system A primary passage and a secondary passage in a parallel relation to each other are disposed between an air cleaner and a branch passage collecting portion of an intake manifold. The primary passage is smaller in diameter than the secondary passage and has... | 10/13/1987 |
| 4672935 | Intake air control system for an automotive engine A system for controlling the amount of intake air of an engine at cold engine operation. A control valve is provided in a bypass around a throttle valve of the engine. When the throttle valve is closed to a position near the throttle valve closed position... | 06/16/1987 |
| 4627396 | Intake control system of engine An embodiment of an induction system for internal combustion engines that permits maximum power output while at the same time insuring good running at low speeds without loss in mid-range torque. Independent intake passages communicate with each chamber o... | 12/09/1986 |
| 4584981 | Intake system for internal combustion engine An intake system for an internal combustion engine has a fuel injector disposed in an induction passage upstream of a pivotally mounted throttle plate having an idle position in which the throttle plate has upstream and downstream edge portions slightly s... | 04/29/1986 |
| 4517941 | Air introduction system of a fuel injection type engine An air introduction system of a fuel injection type engine, including a main passage and a fuel injector for injecting fuel into the main passage. Assist air is introduced to the surrounding of a top nozzle portion of the fuel injector so that the assist ... | 05/21/1985 |
| 4515127 | Four-cycle engine Several embodiments of induction systems for internal combustion engines which provide stratification with an open chamber thus eliminating the need for auxiliary chambers and obviating the need for employing fuel injection. In all embodiments, first and ... | 05/07/1985 |
| 4508091 | Fuel metering apparatus with multi-stage fuel metering valve assembly A fuel metering apparatus is shown as having a throttle body with induction passage means therethrough and a throttle valve for controlling flow through the induction passage means; fuel under superatmospheric pressure is metered through a multi-stage fue... | 04/02/1985 |
| 4491109 | Idling rpm feedback control method having fail-safe function for abnormalities in the functioning of the throttle valve opening detecting means of an internal combustion engine An idling rpm feedback control method for controlling control means that controls the quantity of supplementary air being supplied to an internal combustion engine in a feedback manner, in response to the difference between actual engine rpm and desired i... | 01/01/1985 |
