公开(公告)号：US11619198B1

公开(公告)日：2023-04-04

申请号：US17743750

申请日：2022-05-13

Applicant: Kohler Co.

Inventor： James G. Leu ,  Joshua Bledsoe ,  Digambar Govardhan Patil

IPC: F02M37/04 ,  F02M39/02 ,  F02M37/00

Abstract: An engine apparatus includes a fuel supply system which may comprise a fuel reservoir, primary fuel supply path extending from a fuel inlet in fluid cooperation with the fuel reservoir to a fuel outlet, pressure pulse source, and first and second pressure-operated fuel pumps located along the primary fuel supply path; each of fuel pumps operably coupled to the pressure pulse source. The fuel pumps may be pulse type pumps arranged in series from a flow standpoint along the primary fuel supply path such that fuel discharged by the first fuel pump is supplied to the second fuel pump. The fuel pumps may be mounted and to the engine or appurtenance thereof in a stacked or side-by-side relationship. The pressure pulse source may be the engine crankcase in some designs. The flow and pressures delivered by the series flow fuel pumps are suitable for use with four stroke/cycle engines.