MULTI-CYLINDER COMBINED HIGH PRESSURE OIL PUMP FOR MARINE LOW SPEED ENGINE

The present disclosure discloses a multi-cylinder combined high pressure oil pump for a marine low speed engine, comprising a pump body assembly (1), a pump cover (2), and a cam shaft (10). The pump body assembly (1) comprises a pump body (101) and bearing bushes (102). The pump body (101) is provided with a first horizontal central hole and a plurality of first vertical central holes. The first horizontal central hole is communicated with the first vertical central holes. The pump cover (2) is mounted on the upper side of the pump body (101). The pump cover (2) is provided with a second horizontal central hole (201) and a plurality of second vertical central holes which are communicated with one another. A plunger and barrel assembly (4), a plunger spring (6), a lower spring seat (7), and a guide piston assembly (8) are mounted in each vertical central hole formed by the corresponding first vertical central hole and the corresponding second vertical central hole. Each plunger and barrel assembly (4) is in threaded connection to the interior of the corresponding second vertical central hole. An oil inlet and outlet valve assembly (9) is mounted in each plunger and barrel assembly (4). The cam shaft (10) is mounted in the first horizontal central hole of the pump body (101). A cooling circulating oil way is arranged in an electrically controlled proportional valve. A mixed oil way is arranged in the pump cover (2). By means of electronic control, oil way layering, and sealing structure optimization, the oil supply regulation flexibility and the heavy oil reliability of a high pressure oil pump are improved; meanwhile, the application range of heavy oil of the low speed engine is expanded; the using environment of 750 Cst heavy oil is met. Esillä oleva julkaisu tuo esiin hidaskäyntisen merimoottorin yhdistetyn monisylinterisen korkeapaineöljypumpun, joka käsittää pumpun runkokokoonpanon (1), pumpun kannen (2) ja nokka-akselin (10). Pumpun runkokokoonpano (1) käsittää pumpun rungon (101) ja laakeriholkkeja (102). Pumpun runko (101) on varustettu ensimmäisellä vaakasuoralla keskireiällä ja useilla ensimmäisillä pystysuorilla keskirei'illä. Ensimmäinen vaakasuora keskireikä on yhteydessä ensimmäisiin pystysuoriin keskireikiin. Pumpun kansi (2) on asennettu pumpun rungon (101) yläsivulle. Pumpun kansi (2) on varustettu toisella vaakasuoralla keskireiällä (201) ja useilla toisilla pystysuorilla keskirei'illä, jotka ovat yhteydessä toisiinsa. Mäntä- ja sylinteriko