JPS6117387Y2 - - Google Patents

Description

[Detailed description of the invention] This invention forcibly circulates lubricating oil between the oil sump of an internal combustion engine, etc. and a measuring tank to keep the amount of oil in the oil sump constant at all times, thereby reducing the amount of oil in the measuring tank. The present invention relates to a device for measuring lubricant consumption based on the amount of decrease.

In this type of forced circulation type lubricant consumption measuring device, the S/N of the sensor installed in the measuring tank is
In order to increase the ratio, the amount of forced circulation must be reduced as much as possible, so the oil temperature stabilization time will vary greatly depending on the capacity of the metering tank, and in internal combustion engines, the amount of oil in the oil sump will vary depending on the oil temperature. It depends greatly. Furthermore, when weighing is performed by weight measurement, the measurement accuracy is determined by the amount of decrease/total weight. For the above reasons, it can be said that it is better to have the capacity of the measuring tank as small as possible, but this has the disadvantage that the time during which continuous measurements can be made is reduced. The above problem can be solved by externally replenishing a small capacity measuring tank with a known amount of oil that is slightly smaller than the decreased amount, but this is not practical.

Further, for example, Japanese Patent Publication No. 44-27923 discloses a fuel consumption measuring device, but in the case of fuel, it is important to eliminate bubbles, but it is not necessary to stabilize the temperature.

Therefore, an object of the present invention is to provide a lubricating oil consumption measuring device that can stabilize the oil temperature quickly and enable long-term measurement.

The lubricating oil consumption measuring device according to the present invention has a small-capacity insulating tank installed in a measuring tank for measuring lubricating oil, and the inside of the insulating tank is configured as a circulation booth.
The outside of the insulation tank is configured as a relief booth into which lubricating oil overflows from the circulation booth. An oil pump is installed in the oil pipe leading to the tank, and a replenishment pump is installed to replenish lubricating oil from the relief booth to the circulation booth.

Therefore, when measuring the amount of lubricating oil consumed, the lubricating oil is circulated between the oil reservoir and the circulation booth using an oil feed pump and a suction pump, and the amount of decrease is measured to calculate the amount of lubricating oil consumed. However, since the circulation booth has a relatively small capacity and is insulated, the amount of lubricant in the small-capacity circulation booth is only increased compared to the amount of lubricant in the lubricant consuming equipment. Moreover, since the circulation booth is insulated, the time for the oil temperature to stabilize is shortened. Moreover, if you use the replenishment pump to constantly replenish the amount of oil from the relief booth to the circulation booth, which is slightly larger than the amount that has been reduced, the excess oil will overflow and return to the relief booth, so the level of the lubricating oil will not change and the oil temperature will increase. There is almost no impact on Therefore, no special control is required during long-time measurement work, and the work is easy.

An embodiment of the present invention will be described below with reference to the drawings. In the figure, 1 is a device that consumes lubricating oil, such as an internal combustion engine, and has an oil reservoir 2. 3 is a measuring tank for measuring lubricating oil, and the amount of lubricating oil is measured with a scale 11 or the like. A heat-insulating tank 12 made of a heat-insulating material is provided inside the weighing tank 3, and the weighing tank 3 is divided into a circulation booth 8 in the heat-insulating tank 12 and a relief booth 9 outside the tank 12. The capacity of the measuring tank 3 is made as large as possible for the required measurement accuracy, and the capacity of the insulation tank 12 is made sufficiently small for the amount of circulating oil. Between the circulation booth 8 and the oil sump 2,
An oil feed pump 4, a suction pump 5, an oil feed pipe 6, and a suction return pipe 7 are provided, and the pumps 4 and 5 are operated to maintain the oil level in the oil reservoir 2 at a constant level. A replenishment pump 10 is provided between the circulation booth 8 and the relief booth 9.

The lubricating oil consumption measuring device according to the present invention is constructed as described above, and the lubricating oil is circulated between the oil sump 2 and the circulation booth 8 by the pumps 4 and 5, and the decrease in the amount is measured. Consumption can be measured. At this time, since the circulation booth 8 has a sufficiently small capacity with respect to the amount of circulating oil and is insulated, the time required for stabilizing the oil temperature is shortened. In addition, when replenishing oil from the relief booth 9 to the circulation booth 8 with an amount slightly larger than the amount that has been reduced, the excess oil will overflow and return to the relief booth 9, and the circulating oil level will not change and the oil temperature will increase. It also has no effect on

As described above, the lubricating oil consumption measuring device according to the present invention has a circulation booth in the measuring tank that has a sufficiently small capacity relative to the amount of circulating oil and is insulated, so the time required for oil temperature stabilization is shortened. Therefore, the lubricating oil consumption can be measured as quickly as possible. In addition, when the amount of oil in the measuring tank is insufficient, all you need to do is replenish the oil from the outside to the relief booth. In this case, the circulating oil has no effect on the liquid level or oil temperature, and there is no interruption in measurement. Time can be measured.

[Brief explanation of the drawing]

The figure shows an embodiment of the lubricating oil consumption measuring device according to the present invention. 1...Lubricating oil consuming equipment, 2...Oil sump, 3...Measuring tank, 4, 5...Pump, 8...Circulation booth, 9...Relief booth, 12...Insulation tank.

Claims (1)

[Scope of utility model registration request] A small capacity heat insulating tank is provided in the measuring tank for measuring lubricating oil, the inside of the heat insulating tank is configured as a circulation booth, and the outside of the heat insulating tank is configured as a relief booth into which lubricating oil overflows from the circulation booth flows. A suction pump is installed in the suction pipe leading from the oil sump of the lubricating oil consuming equipment to the circulation booth, and an oil pump is installed in the oil pipe leading from the circulation booth to the oil sump, and the oil supply pipe from the relief booth to the circulation booth is equipped with a suction pump. A lubricating oil consumption measurement device characterized by being provided with a replenishment pump for replenishing oil.