Low-pressure fuel-injection apparatus; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F02Combustion engines F02MSUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF

F02M69/00Low-pressure fuel-injection apparatus; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel

F02M69/002characterised by means for intermittently metering the portion of fuel injected F02M69/005characterised by control of air admission to the engine according to the fuel injected F02M69/007by means of devices using fuel pressure deviated from main fuel circuit acting on air throttle valve F02M69/02Pumps peculiar thereto F02M69/04Injectors peculiar thereto F02M69/041having vibrating means for atomizing the fuel F02M69/042Positioning of injectors with respect to engine F02M69/043for injecting into the intake conduit upstream of an air throttle valve F02M69/044for injecting into the intake conduit downstream of an air throttle valve F02M69/045for injecting into the combustion chamber F02M69/046for injecting into both the combustion chamber and the intake conduit F02M69/047injectors with air chambers F02M69/048having variable fuel outlets F02M69/06characterised by the pressurisation of the fuel being caused by centrifugal force acting on the fuel F02M69/08characterised by the fuel being carried by compressed air into main stream of combustion-air F02M69/10peculiar to scavenged two-stroke engines F02M69/12comprising a fuel-displaced free-piston for intermittently metering and supplying fuel to injection nozzles F02M69/125Means for varying the stroke of the free-piston F02M69/14having cyclically-operated valves connecting injection nozzles to a source of fuel under pressure during the injection period F02M69/142the valves being operated by fluid impulses F02M69/145the valves being actuated electrically F02M69/147the valves being actuated mechanically F02M69/16characterised by means for metering continuous fuel flow to injectors or means for varying fuel pressure upstream of continuously or intermittently operated injectors F02M69/18the means being metering valves throttling fuel passages to injectors or by-pass valves throttling overflow passages, the metering valves being actuated by a device responsive to the engine working parameters F02M69/20the device being a servo-motor F02M69/22the device comprising a member movably mounted in the air intake conduit and displaced according to the quantity of air admitted to the engine F02M69/24the device comprising a member for transmitting the movement of the air throttle valve actuated by the operator to the valves controlling fuel passages F02M69/26the means varying fuel pressure in a fuel by-pass passage, the pressure acting on a throttle valve against the action of metered or throttled fuel pressure for variably throttling fuel flow to injection nozzles F02M69/28characterised by means for cutting-out the fuel supply to the engine or to main injectors during certain operating periods F02M69/30characterised by means for facilitating the starting-up or idling of engines or by means for enriching fuel charge F02M69/32with an air by-pass around the air throttle valve or with an auxiliary air passage F02M69/325with an auxiliary injection nozzle therein F02M69/34with an auxiliary fuel circuit supplying fuel to the engine F02M69/36having an enrichment mechanism modifying fuel flow to injectors F02M69/38using fuel pressure F02M69/383the fuel passing through different passages to injectors or to a drain, the pressure of fuel acting on valves to close or open selectively these passages F02M69/386variably controlling the pressure of the fuel by-passing the metering valves F02M69/40using variably controlled air pressure F02M69/42using other means than variable fluid pressure F02M69/44characterised by means for supplying extra fuel to the engine on sudden air throttle opening F02M69/46Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44 F02M69/462Arrangement of fuel conduits F02M69/465of fuel rails F02M69/467Devices using intake air for generating a control signal acting on fuel delivery F02M69/48Arrangement of air sensors F02M69/50Arrangement of fuel distributors F02M69/52Arrangement of fuel metering devices F02M69/54Arrangement of fuel pressure regulators