Search International and National Patent Collections
Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (WO1985004450) A FLUID DISTRIBUTING APPARATUS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1985/004450 International Application No.: PCT/US1984/000724
Publication Date: 10.10.1985 International Filing Date: 10.05.1984
IPC:
F02M 41/06 (2006.01) ,F02B 75/02 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
M
SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
41
Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
02
the distributor being spaced from pumping elements
06
the distributor rotating
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
B
INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
75
Other engines, e.g. single-cylinder engines
02
Engines characterised by their cycles, e.g. six-stroke
Applicants:
CATERPILLAR TRACTOR CO. [US/US]; 100 Northeast Adams Street Peoria, IL 61629, US
Inventors:
GIBSON, Dennis, H.; US
STOCKNER, Alan, R.; US
WALDMAN, Donald, J.; US
Agent:
PERRY, William, C. @; Caterpillar Tractor Co. 100 Northeast Adams Street Peoria, IL 61629, US
Priority Data:
594,04027.03.1984US
Title (EN) A FLUID DISTRIBUTING APPARATUS
(FR) APPAREIL DE DISTRIBUTION DE FLUIDE
Abstract:
(EN) In the use of fuel injection pumps, a distributing rotor is often utilized to sequentially deliver fuel from an inlet to a combustion chamber on an engine in combination with one or more reciprocating high pressure pistons. Due to the positioning of the various passages through which the fuel is directed, cavitation of the pump is often experienced which has a very serious effect on the life of the components within the pump. The fluid distribution apparatus (10) of the present invention provides a single delivery passage (58, 60) between the pumping chambers (22, 24) of the reciprocating pistons (26, 28) and the distributing rotor (82). With this arrangement, fluid that is communicated from the bore (54) to the pumping chambers (22, 24) in response to the intake stroke of the pistons (26, 28) is directed back through the same passage (58, 60) during the pressurization stroke of the pistons (26, 28). The positioning of the single delivery passages (58, 60) prevents the fuel injection pump from experiencing the severe cavitation that is common with previous designs and thus the fore-shortened life of the pump components.
(FR) Avec des pompes d'injection de carburant, on utilise souvent un rotor de distribution pour délivrer séquentiellement le carburant d'une entrée à une chambre de combustion sur un moteur en combinaison avec un ou plusieurs pistons à pression élevée effectuant un mouvement de va-et-vient. En raison du positionnement des divers passages à travers lesquels est dirigé le carburant, on rencontre fréquemment une cavitation de la pompe qui a un effet très grave sur la durée de vie des composants de la pompe. L'appareil de distribution de fluide (10) de la présente invention prévoit un passage d'alimentation unique (58, 60) entre les chambres de pompage (22, 24) des pistons à mouvement de va-et-vient (26, 28) et le rotor de distribution (82). Avec ce montage, le fluide passant du trou (54) aux chambres de pompage (22, 24) en réponse à la course d'admission du piston (26, 28) est ramené à travers le même passage (58, 60) durant la course de pressurisation du piston (26, 28). Le positionnement des passages d'alimentation uniques (58, 60) empêche la pompe d'injection de subir la grave cavitation qui est habituelle avec les montages antérieurs, ainsi que le raccourcissement de la durée de vie des composants de la pompe.
Designated States: BR, JP
European Patent Office (BE, DE, FR, GB)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0175693