Fuel supply device

摘要

A device capable of supplying an internal combustion engine 60 with a first fuel F1 of a high octane number fuel, and a second fuel F2 of a low octane number fuel or a raw fuel F0. The device is equipped with a cooling medium circulating path LL configured to perform heat exchange between a cooling medium for cooling the internal combustion engine 60 and a separator 20. The device adjusts a flow rate of the cooling medium in the cooling medium circulating path LL, so that a separator temperature T1 is contained in a predetermined temperature range, according to T1, a raw fuel temperature T2 and a cooling medium temperature T3.

主权项

1. A fuel supply device which supplies an internal combustion engine with a first fuel which contains a larger number of high octane number components than a raw fuel, and the raw fuel or a second fuel which contains a larger number of low octane number components than the raw fuel selectively or with a specified mixing ratio simultaneously, where the first fuel and the second fuel are separated from the raw fuel, the device comprising:
a raw fuel tank storing the raw fuel; a separator which separates the raw fuel into the first fuel and the second fuel; a raw fuel path configured to discharge the raw fuel from the raw fuel tank to the separator by a raw fuel discharge device; a cooling medium circulating path configured to circulate a cooling medium for cooling the internal combustion engine; a second fuel path configured to feed the second fuel separated by the separator into the raw fuel tank; and a cooler configured to cool the second fuel, in the second fuel path, wherein the cooling medium circulating path is configured to perform heat exchange between the cooling medium circulating in the cooling medium circulating path and the separator, and the fuel supply device further comprises a flow rate adjusting mechanism which adjusts a flow rate of the cooling medium in the cooling medium circulating path, taking at least one of a first temperature which is a temperature of the separator, a second temperature which is a temperature of the raw fuel in the raw fuel path, and a third temperature which is a temperature of the cooling medium downstream of the internal combustion engine and upstream of the separator flowing in the cooling medium circulating path, as a reference factor, so that the first temperature is contained in a predetermined temperature range.