Lubrication supply control system

A method for delivering a calculated lubricant amount from a lubricant system to an engine to lubricate at least a portion of the engine, the method comprising sensing at least one characteristic of the engine, calculating the lubricant amount required by the engine in accordance with said characteristic and a battery voltage range, and actuating a lubrication pump to deliver the calculated amount of lubricant, wherein the lubricant amount is maintained at at least a predetermined amount based on a lubricant amount control map when the battery voltage is below a predetermined value.

A method for determining a correct amount of lubricant being delivered to an engine to lubricate at least a portion of the engine, the method comprising sensing an engine speed of the engine, sensing an engine load of the engine, sensing an amount of lubricant volume in a lubrication system, calculating the amount of lubricant required by the engine based upon the sensed engine speed, the sensed engine load, the sensed lubricant volume, and a battery voltage and comparing the calculated lubricant amount to an actual measured lubricant amount from a lubricant level sensor, activating an alarm if the compared calculated lubricant level is not within a predetermined range of the actual lubricant level.

An internal combustion engine comprising a lubrication system arranged to lubricate at least a portion of the engine with lubricant, the lubrication system having a lubrication pump that delivers the lubricant toward the portion of the engine, a first sensor configured to sense an engine speed of the engine, a second sensor configured to sense an engine load of the engine, a third sensor configured to sense a volume of lubricant in the lubrication system, and a control device configured to control the lubrication pump, the control device determining an amount of lubricant that is delivered by the lubrication pump based upon outputs from the first sensor, the second sensor, the third sensor, and a battery voltage to control the lubrication pump, wherein the control device maintains the lubricant amount at at least a predetermined amount based on a lubricant amount control map when the battery voltage is below a predetermined value.

An internal combustion engine comprising a lubrication system arranged to lubricate at least a portion of the engine with lubricant, the lubrication system having a lubricant tank, an alarm, and a lubrication solenoid that delivers the lubricant from the lubricant tank toward the portion of the engine, a sensor configured to sense an engine speed of the engine, a second sensor configured to sense an engine load of the engine, a third sensor configured to sense a lubricant level inside the lubricant tank, and a control device configured to compare a calculated lubricant level depending on outputs from the first sensor, the second sensor, and a battery voltage to an actual lubricant level output from the third sensor, the control device activating the alarm if the compared calculated lubricant level is not within a predetermined range of the actual lubricant level.

An internal combustion engine comprising a lubrication system arranged to lubricate at least a portion of the engine with a lubricant, the lubrication system having a lubrication pump that delivers the lubricant toward the portion of the engine, and a means for controlling the lubrication pump to deliver an amount of lubricant based upon outputs from an engine speed sensor, an engine load sensor, a lubricant volume sensor, and a battery voltage, wherein the lubricant amount is maintained at at least a predetermined amount based on a lubricant amount control map when the battery voltage is below a predetermined value.

An internal combustion engine comprising a lubrication system arranged to lubricate at least a portion of the engine with lubricant, the lubrication system having a lubricant tank, an alarm, and a lubrication solenoid that delivers the lubricant from the lubricant tank toward the portion of the engine, and a means for comparing a calculated lubricant level depending on outputs from an engine speed sensor, an engine load sensor, and a battery voltage to an actual lubricant level output from a lubricant level sensor, the control device activating the alarm if the compared calculated lubricant level is not within a predetermined range of the actual lubricant level.

An internal combustion two-stroke engine comprising a lubrication system arranged to lubricate at least a portion of the engine with a lubricant, the lubrication system having a lubrication pump driven by a solenoid that delivers the lubricant toward the portion of the engine, at least one engine sensor configured to sense an engine characteristic, and a control device configured to control the lubrication pump, the control device determining an amount of lubricant that is delivered by the lubrication pump based upon outputs from the at least one engine sensor and a battery voltage to control the lubrication pump, wherein the control device maintains the lubricant amount at at least a predetermined amount based on a lubricant amount control map when the battery voltage is below a predetermined value.