Class / Patent application number | Description | Number of patent applications / Date published |
123437000 | Auxiliary control of carburetor fuel metering | 30 |
20090107459 | Carburetor electronic fuel injection plenum - A injection conversion body with internal injector compartment for converting a normally carbureted internal combustion engine to a fuel injected engine while concealing the fuel delivery system. The original engine carburetor is removed. The plenum assembly is mated to the original engine intake manifold and a suitable throttle body is mated to the intake apertures which are oriented to permit installation without modification to the vehicle body work or relocation of other engine components. Air drawn through the throttle body is mixed with fuel from fuel injectors inside the plenum as it is directed to and exits the fuel air exhaust opening and enters the engine intake manifold. Interchangeable restriction plates are provided for insertion into the plenum fuel air exhaust opening to tune the fuel/air mixing characteristics to match the needs of the engine with which it is mated. Fuel is delivered to the fuel injectors through an internal, concealed fuel rail and fuel lines. | 04-30-2009 |
20090145399 | METHOD FOR CONTROLLING A FUEL VALVE AND/OR AN AIR VALVE FOR AN INTERNAL COMBUSTION ENGINE - A method for controlling a valve of a crank case scavenged internal combustion engine includes determining a valve control sequence, wherein the valve is controlled in consecutive periods of revolutions each having a period length of at least ten revolutions, and controlling the valve according to the valve control sequence to adjust the ratio of fuel to air in a combustible mixture delivered to an engine combustion chamber. Determining the valve control sequence for each period includes providing a number of valve shut-off positions, wherein the number of valve shut-off positions corresponds to an amount of fuel or air to be supplied to the engine during the corresponding period, and determining which revolutions of the period that the valve is to be closed. | 06-11-2009 |
20090211555 | Carburetor for a Combustion Engine, and Method for the Controlled Delivery of Fuel - In order to allow fuel to be delivered in a controlled manner into a mixing chamber of a carburetor, a needle is displaced towards a needle seat between an open and a closed position in a clocked manner relative to an intake stroke of the engine such that the amount of fuel that flows into the mixing chamber via a fuel duct is controlled in accordance with the rotational speed and the engine load. | 08-27-2009 |
20100089365 | VARIABLE RATE PUSH/PULL TWIST THROTTLE - A variable rate throttle for controlling a vehicle carburetor having control cables. The variable rate throttle includes a housing surrounding a cavity, a plurality of interchangeable throttle reels, each throttle reel having a different track radius, where a particular one of the throttle reels is positioned at a time in the cavity of the housing and which engages the control cables. A throttle handle engages the interchangeable throttle reel so that rotation of the handle causes rotation of the throttle reel and thus moves the control cables of the vehicle carburetor. | 04-15-2010 |
20110056463 | CARBURETOR CONTROL SYSTEM - A carburetor control system includes: a governor device that is coupled to a throttle lever, opens a throttle valve when an operation of an engine is stopped, and opens or closes the throttle valve in accordance with a rotational number of the engine when the engine is in operation; a choke return spring urging a choke lever in a direction to close a choke valve; and an automatic choke device opening the choke valve in accordance with an increase in temperature of the engine. In the carburetor control system, the throttle lever is provided with a drive arm pivoting the choke lever, during a cold operation of the engine, to a position where the choke valve is at an intermediate degree of opening in operative connection with the throttle lever being pivoted by the governor device to a position where the throttle valve is at a degree of opening for idling or a position in a vicinity thereof. Accordingly, it is possible to mechanically open the choke valve to a predetermined intermediate degree of opening, when the engine is in a cold idling state, in operative connection with the throttle valve, so as to be capable of ensuring a fuel-efficient and stable idling state. | 03-10-2011 |
20110226218 | Secondary Fuel Premixing Controller for an Air Intake Manifold of a Combustion Engine - A secondary fuel premixing controller for introducing a secondary fuel into an air intake manifold of a primary fuel combustion engine. The controller includes a hollow housing having an air inlet, a main controller body, and an air/secondary fuel mixing outlet connected together in central alignment one to another. The air inlet introduces incoming air into the controller while the air/fuel mixing outlet discharges a blended mixture of secondary fuel and air into an air intake manifold of the running engine. The main controller body includes a secondary fuel manifold positioned centrally within an interior of the controller which supports for axial movement an air pressure valve positioned proximate to the air inlet and a secondary fuel/air blender connected thereto. The secondary fuel manifold also has a secondary fuel inlet formed therethrough connectable at an outer end thereof to a source of secondary fuel, an inner end positioned for sealing engagement with the secondary fuel/air blender. The air pressure valve and secondary fuel/air blender are biased to close and seal the inner end of secondary fuel inlet when the engine is stopped and to open the inner end responsive to engine intake air intake through the controller when the engine is running. | 09-22-2011 |
20120318236 | Handheld Work Apparatus - A work apparatus has an engine with a carburetor. An actuating element is connected to the choke shaft of the choke element of the carburetor. An operating mode selector has operating, warm start and cold start positions and is connected fixedly in terms of rotation to an adjusting element. The actuating element is pivoted through a pivot angle (α | 12-20-2012 |
20140026854 | CARBURETOR SYSTEM FOR A CARBURETOR ENGINE - A fuel supply system for small two-stroke internal combustion engines for e.g. chain saws, line trimmers and similar hand-held power-tools including a diaphragm carburetor ( | 01-30-2014 |
20140196688 | ONE-STEP STARTING CARBURETOR - A one-step starting carburetor includes a body, and a pulse generator and an oil pumping unit which are connected with the body. The oil pumping unit can produce an oil pumping function to pump fuel from an oiler to the carburetor when a flywheel of an engine is revolving. When the carburetor is operating, it only needs to pull a starting line and does not need to extrude an oil pumping ball to pump the fuel for the carburetor or to close a choke valve. After hearing a voice like ‘poop-poop’, it does not need to half open the choke valve to warm the engine or to open the choke valve after warming the engine. Thus the operation of the carburetor is simple for users' convenience. | 07-17-2014 |
20140216402 | Carburetor for a hand-guided power tool and hand-guided power tool - A carburetor for a hand-guided power tool has a carburetor housing and a carburetor rotor supported rotatably in the carburetor housing about an axis of rotation. A needle is disposed on the carburetor rotor and projects into a fuel opening of the carburetor. An adjusting element is operatively connected to the needle so as adjust a position of the needle relative to the carburetor rotor. The adjusting element has an engagement contour that is to be engaged by a tool for adjusting the adjusting element. A securing contour that is fixedly connected to the carburetor rotor is provided. The securing contour, at any point of the securing contour, has a spacing to the axis of rotation of at least approximately 10 mm. | 08-07-2014 |
20140331972 | REGULATING DEVICE FOR ADJUSTMENT ANGLE OF PILOT SCREW FOR CARBURETOR - Provided are a tamper cap ( | 11-13-2014 |
20160102635 | STARTING DEVICE AND CARBURETOR SUPPLYING FIXED AMOUNT OF FUEL - A starting device for feeding a quantity of fuel from the fixed-quantity fuel chamber to an intake passage during start-up having a manually operated primary pump for suctioning/pumping fuel and arranged on a fuel introduction path connected along a fuel-feeding path; and a fixed-quantity fuel chamber for temporarily storing fuel delivered from the primary pump. An internal wall of the fixed-quantity fuel chamber undergoes elastic displacement, allowing its internal capacity to expand/shrink within a predetermined range; the fixed-quantity fuel chamber is connected to a fuel delivery path that communicates with the intake passage side and has a manually operated open/close valve; the valve is opened in a state in which, due to the primary pump being operated, the fixed-quantity fuel chamber is filled with a predetermined quantity of fuel while enlarging its internal capacity, whereby it shrinks due to an elastic contraction force and the fuel. | 04-14-2016 |
123438000 | By electrical or electronic control system | 18 |
20080245339 | AUTO CHOKE DEVICE FOR AN ENGINE - An auto choke device for an engine includes a choke valve for varying the opening of an intake passage of the engine, and a starter motor for starting the engine. Upon activation of the starter motor, the choke valve starts valve opening motion from a fully closed position. The choke valve continues the valve opening motion at a certain valve opening speed until it achieves a start opening set based on the temperature of the engine. | 10-09-2008 |
20090013965 | Carburetor and method of operating the same - A carburetor ( | 01-15-2009 |
20090241900 | INTAKE AIR CONTROL SYSTEM OF V-TYPE INTERNAL COMBUSTION ENGINE - An intake air control system of a V-type internal combustion engine having cylinder axes formed in a V-shape with a crankshaft provided therebetween is provided. An operation input shaft driven by an operator's input and an operation input shaft turning angle sensor that detects a turning angle of the operation input shaft are also provided. A throttle body having a throttle valve is formed with an intake passage for each of the cylinders. The operation input shaft is located between valve shafts of an opposing pair of throttle valves that are located on opposing bank portions of the V-type internal combustion engine, when viewed from the direction of the crankshaft. The operation input shaft is disposed separately from the throttle valve shafts and the operation input shaft turning angle sensor is provided at a shaft end of the operation input shaft. | 10-01-2009 |
20100126466 | Carburetor - To prevent back bleed in a carburetor including a slow fuel passage branched from a main fuel passage, in a carburetor for an engine in which a slow air intake port to introduce air into a slow air bleed passage opens on the side of a suction passage; a slow fuel passage is connected in the middle of a main fuel passage on the upstream side, joins the slow air bleed passage on the downstream side, and has an open end on the side of the suction passage; and the main fuel passage opens in a state where a main nozzle projects in a venturi part of the suction passage, wherein the slow air intake port is opened at a predetermined position of the venturi part having an inner diameter equal to or less than that of the suction passage at a position where the main fuel passage opens. | 05-27-2010 |
20100126467 | Fuel-metering arrangement having an electromagnetic fuel valve - The invention relates to a fuel-metering arrangement for the mixture-forming unit ( | 05-27-2010 |
20110253102 | SYSTEM FOR SUPPLEMENTARY FUEL SUPPLY - Supply of supplementary fuel is controlled by activation of a valve in response to certain engine operating conditions or parameters. For example, the supplementary fuel may be supplied to facilitate starting and warming up a cold engine, or to cool and/or slow down an engine operating above a threshold speed. | 10-20-2011 |
20120272936 | ELECTRONIC FUEL CONTROL SYSTEM - The present invention is concerned with an electronic fuel control system including a carburettor having a throttle bore, a fuel chamber, and at least one fuel circuit extending between the fuel chamber and the throttle bore and controlled by an adjustment member such as a needle, the control system further including an actuator operable to automatically adjust the adjustment member in response to one or more engine operating parameters. | 11-01-2012 |
20130133618 | Method for Controlling the Fuel Supply to an Internal Combustion Engine at Start-Up and a Carburetor - The invention concerns a method for controlling the fuel supply to an internal combustion engine at start-up, the engine having a fuel supply system. The invention also concerns a carburetor having a fuel supply system including a main fuel path connecting a diaphragm controlled regulating chamber to a main outlet in the region of the venturi section, the main fuel path including an actively controlled fuel valve, and an idling fuel path branching off from the main fuel path downstream of the valve and ending in at least one idling outlet in the region of a throttle valve, the fuel supply system further including a start fuel line starting upstream or downstream of the fuel valve and ending in at least one start fuel outlet to the intake channel. | 05-30-2013 |
20130228154 | CONTROL DEVICE AND CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE - It is determined whether a first condition that a temperature of an internal combustion engine is lower than or equal to a predetermined value and an alcohol concentration of fuel is higher than or equal to a predetermined value is satisfied and whether a second condition that indicates that a probability that the internal combustion engine stalls is lower than or equal to a predetermined level is satisfied. When both the first and second conditions are satisfied, control over an intake air amount is limited; whereas, when at least one of the first and second conditions is not satisfied, control over the intake air amount is not limited. | 09-05-2013 |
20140007840 | CARBURETORS FOR PROVIDING AIR-TO-FUEL RATIO VARIABILITY INDEPENDENT OF ENGINE LOAD - Carburetor features, which can include but are not limited to varying slope angles in different sections of a multi-sectioned carburetor needle, can provide combustion mixtures to an engine that include a fuel-air ratio that is variable independent of the rate of air flow through the carburetor. Related methods, systems, articles of manufacture, etc. are described. | 01-09-2014 |
20140196689 | PULSE GENERATOR USED FOR A ONE-STEP STARTING CARBURETOR - A pulse generator used for a one-step starting carburetor includes a pulse chamber, a lower cover, a support and a solenoid valve. Two types of pulse are produced in the pulse chamber: the normal pulse and the crowding pulse. The normal pulse provides the normal pulse force for the carburetor. When the engine starts in cold, the crowding pulse goes into the carburetor to concentrate the gas mixture in a mixing chamber of the carburetor. The pulse generator described herein solves the problem that the pulse force is insufficient in the four-stroke engine. The original suction pulse is modified to two directions of a suction pulse and a blowing pulse. The fuel pumping capacity of the oil pumping unit which is connected with the carburetor is greatly increased to improve working stability of the engine. | 07-17-2014 |
20140299099 | Internal Combustion Engine - A main nozzle ( | 10-09-2014 |
20150047609 | SYSTEMS AND METHODS FOR ELECTRONICALLY CONTROLLING FUEL-TO-AIR RATIO FOR AN INTERNAL COMBUSTION ENGINE - Systems and methods for electronically controlling the fuel-to-air ratio of a fuel mixture supplied to an internal combustion engines are disclosed. In one aspect, electronic control systems and methods are provided that determine and automatically move a choke valve in accordance with a first ramp having a first characteristic that is dependent on engine temperature and ambient air temperature. In another aspect, an integrated ignition and electronic auto-choke module is provided. In yet another aspect, electronic control systems and methods are provided that dynamically control a movement characteristic of a choke valve using a feedback loop. | 02-19-2015 |
20160017820 | FUEL SUPPLY APPARATUS FOR ENGINE - An engine fuel supply apparatus includes: a fuel chamber provided in a carburetor; a first communication passage for opening the interior of the fuel chamber to the atmosphere; a second communication passage for communicating the interior of the fuel chamber with the interior of a Venturi section; and a passage switching section capable of switching between the first and second communication passages and mechanically connected to the main switch so that it can operate in response to the main switch shifting between an ignition position and a stop position. The passage switching section switches the second communication passage to the first communication passage in response to the main switch shifting from the stop position to the ignition position and switches the first communication passage to the second communication passage in response to the main switch shifting from the ignition position to the stop position. | 01-21-2016 |
123439000 | Variable venturi carburetor | 4 |
20100077993 | Carburetor With Electronic Jets - A carburetor has a set of electrically operated fuel injection elements, including acceleration responsive fuel injector and at least one fuel injector. These fuel injectors meter fuel, at the direction of an electronic control device, directly into the fuel delivery passages of a carburetor without the need for float bowls, needle and seat valves and carburetor jets in the carburetor assembly. | 04-01-2010 |
20100180864 | ELECTRONIC CONTROL SYSTEM FOR CARBURETOR - An electronic control system for a carburetor, includes: a transmission device ( | 07-22-2010 |
20110174269 | ENGINE INCLUDING INTAKE VACUUM MANAGEMENT SYSTEM - An engine assembly may include an engine structure defining a first intake port in communication with a combustion chamber, an intake manifold, a vacuum actuated mechanism, a first intake valve, and a valve actuation assembly. The vacuum actuated mechanism may include a vacuum chamber in communication with the intake manifold. The first intake valve may open and close the first intake port. The valve actuation assembly may be engaged with the first intake valve and may be operated in first and second modes. The first mode may provide a first opening duration of the first intake valve during one of an intake stroke and a compression stroke of a piston located in the combustion chamber. The second mode may provide a second opening duration of the first intake valve that is different than the first opening duration, providing reduced intake manifold pressure. | 07-21-2011 |
20130255629 | FUEL CONTROL METHOD FOR HAND-CARRIED ENGINE-DRIVEN WORKING MACHINE - The opening of a solenoid valve is automatically adjusted after an engine is started and before actual work is performed for an appropriate air-fuel ratio, whereby it is possible to attain a good and stable driving of the engine without any delay even for an abrupt change in load. | 10-03-2013 |