Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 - F02M57/00

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

F02M59/00Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 - F02M57/00

F02M59/02of reciprocating-piston or reciprocating-cylinder type F02M59/022having an accumulator storing pressurised fuel during pumping stroke of the piston for subsequent delivery to the injector F02M59/025characterised by a single piston F02M59/027Unit-pumps, i.e. single piston and cylinder pump-units F02M59/04characterised by special arrangement of cylinders with respect to piston-driving shaft F02M59/06with cylinders arranged radially to driving shaft F02M59/08characterised by two or more pumping elements with conjoint outlet or several pumping elements feeding one engine cylinder F02M59/10characterised by the piston-drive F02M59/102Mechanical drive F02M59/105hydraulic drive F02M59/107pneumatic drive F02M59/12having other positive-displacement pumping elements F02M59/14of elastic-wall type F02M59/16characterised by having multi-stage compression of fuel F02M59/18characterised by the pumping action being achieved through release of pre-compressed springs F02M59/20Varying fuel delivery in quantity or timing F02M59/205Quantity of fuel admitted to pumping elements being metered by an auxiliary metering device F02M59/22Varying quantity or timing by adjusting cylinder-head space F02M59/24with constant-length-stroke pistons having variable effective portion of stroke F02M59/243caused by movement of cylinders relative to their pistons F02M59/246Mechanisms therefor F02M59/26caused by movements of pistons relative to their cylinders F02M59/265characterised by the arrangement or form of spill port of spill contour on the piston F02M59/28Mechanisms therefor F02M59/30with variable-length-stroke pistons F02M59/32fuel delivery being controlled by means of fuel-displaced auxiliary pistons, which effect injection F02M59/34by throttling of passages to pumping elements or of overflow passages F02M59/36by variably-timed valves controlling fuel passages to pumping elements or overflow passages F02M59/361Valves being actuated mechanically F02M59/362valves rotating F02M59/363arrangements for adjusting the rotary valve F02M59/365valves being actuated by the fluid pressure produced in an auxiliary pump F02M59/366Valves being actuated electrically F02M59/367Pump inlet valves of the check valve type being open when actuated F02M59/368Pump inlet valves being closed when actuated F02M59/38Pumps characterised by adaptations to special use or conditions F02M59/40for reversible engines F02M59/42for starting of engines F02M59/44Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers F02M59/442means preventing fuel leakage around pump plunger F02M59/445Selection of particular materials F02M59/447means specially adapted to limit fuel delivery or to supply excess of fuel temporarily F02M59/46Valves F02M59/462Delivery valves F02M59/464Inlet valves of the check valve type F02M59/466Electrically operated valves F02M59/468using piezo-electric operating means F02M59/48Assembling Disassembling Replacing F02M59/485Means for fixing delivery valve casing and barrel to each other or to pump casing