Patent · US Expired

Lubricant supply for two cycle engine

US4989555A · kind A · utility

12Cited by
4References
14Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJan 30, 1990
Grant dateFeb 5, 1991
Priority date
Expiry dateJan 30, 2010

Classification

  • Technology area (CPC F)Mechanical Engineering; Lighting; Heating
  • CPC primaryF02B2075/025
  • WIPO fieldEngines, pumps, turbines
  • WIPO sectorMechanical engineering

Abstract

An apparatus and method for maintaining the control of lubricant to a two cycle engine so as to provide adequate lubrication without over lubrication and deleterious exhaust conditions, such as smoke. The system includes a lubricant pump that has both its output and its timing of discharge variable. Under one range of running conditions, the normal conditions, the output of the pump is maintained constant and the timing of the output is varied. Under high speed, high load conditions, the time of operation of the pump is held constant and the output time of the pump is varied.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.