Oil flushing system
OwnerPhil LaFleurinventor
Life of this patent
Estimating the term…
Abstract
Methods and apparatus to flush residual used oil from the lubrication system of an engine during an oil change. The method includes draining used oil from a tank of the lubrication system and then adding fresh oil to the tank. An adaptor or fitting is used to provide an outlet in the lubrication system to flush any residual used oil that may not have been drained along with used oil in the oil tank. The engine may be started such that a scavenging pump of a lubrication system pumps residual used oil out of the system through the outlet. Once a user observes that residual used oil has been substantially flushed from the system, the engine is stopped to terminate the flushing process.
Claims27
A method of removing residual used oil from a lubrication system of an engine having a permanent primary oil pump as a component of the engine and a permanent scavenging oil pump as a component of the engine, the method comprising the acts of:
- draining used oil from an oil tank of the lubrication system;
- adding fresh oil to the oil tank;
- pumping the fresh oil through the lubrication system with the permanent primary oil pump of the engine to flush residual used oil from the lubrication system and into a dry sump of the engine;
- and
- pumping the residual used oil from the dry sump and out of the engine with the permanent scavenging oil pump of the engine.
A method of retrofitting a lubrication system having an oil line adapted to deliver oil from a dry sump of an engine to an oil tank, the method comprising acts of:
- removing an original filling that provides a connection between the oil line and a port in the lubrication system;
- connecting a first end of a replacement filling having a separable joint to the oil line;
- and
- connecting a second end of the replacement filling to the port to retrofit the lubrication system.
A kit of parts used to retrofit an engine, the kit comprising:
- a first filling having a separable joint to provide an outlet from a lubrication system of the engine;
- a bypass adaptor to mount to an oil filter housing of the engine;
- a second filling to direct flushed oil away from the engine;
- and
- a drain line to direct flushed oil into a waste receptacle.
An adaptor for use in removing oil from an engine lubrication system by pumping the oil with a permanent primary oil pump of the engine and a permanent scavenging oil pump of the engine, the adaptor comprising:
- a central mounting hole having internal threads configured to mate with a threaded protrusion of an oil filter housing on the engine;
- and
- an oil passageway positioned radially outward of the central mounting hole to receive oil pumped from the engine, the oil passageway having at least a portion that extends substantially parallel to the central mounting hole, wherein the oil passageway is in direct fluid communication with the central mounting hole.
Dependencies are inferred from the claim text.