Fuel supply device
AssigneeHonda Motor Co., Ltd.
InventorsKenji Shigetoyo, Hirotsugu Kudo, Hiroshi Chishima, Masahiko Asanuma
Life of this patent
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Abstract
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.
Claims4
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.
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 temperature sensor which measures the temperature of the separator as a first temperature and the temperature of the raw fuel flowing in the raw fuel path as a second temperature, upon receiving an internal combustion engine stop command;
- a circulation control element which actuates the raw fuel discharge device in a case where the first or the second temperature measured by the temperature sensor is equal to or higher than a predetermined temperature;
- and
- a stopping element which stops the internal combustion engine and the raw fuel discharge device, in a case where the first or the second temperature measured by the temperature sensor is lower than a predetermined temperature, 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.
Dependencies are inferred from the claim text.