Lubrication system for fuel pump of GDI engine
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorBosung Shin
Life of this patent
Estimating the term…
Abstract
A lubrication system for a fuel pump of an engine, may include at least one oil supply hole formed radially in a journal of a camshaft, an oil channel formed in a cam cap rotatably connected to the journal of the camshaft and selectively communicating with the at least one oil supply hole, a nozzle formed in the cam cap and being in fluid connection with the oil channel to inject oil to a contact portion between a pump-driving cam of the camshaft and an operational member of the fuel pump driven by the pump-driving cam, and a fluid communication control member selectively connecting the oil channel and the at least one oil supply hole in accordance with rotation of the camshaft.
Claims7
A lubrication system for a fuel pump of an engine, comprising:
- at least one oil supply hole formed radially in a journal of a camshaft;
- an oil channel formed in a cam cap rotatably connected to the journal of the camshaft and selectively communicating with the at least one oil supply hole;
- a nozzle formed in the cam cap and being in fluid connection with the oil channel to inject oil to a contact portion between a pump-driving cam of the camshaft and an operational member of the fuel pump driven by the pump-driving cam;
- and
- a fluid communication control member selectively connecting the oil channel and the at least one oil supply hole in accordance with rotation of the camshaft,
- wherein the fluid communication control member is a connection groove formed in a journal contact surface of the cam cap across the oil channel with a predetermined length along a rotational direction of the at least one oil supply hole to fluid-communicate with the oil channel.
Dependencies are inferred from the claim text.