To provide a fuel and water injection internal combustion engine capable of controlling the water injection with high accuracy by a comparatively simple control method, reducing the cost of a device of a water injection controlling and operating unit, and further obtaining the sufficient NOx reduction effect by controlling an injection rate of the fuel injection and the water injection at the same time.
This fuel and water injection internal combustion engine wherein the high-pressure fuel from a fuel injection pump and the water supplied from a water feed pump are injected into a combustion chamber from one fuel injection valve, comprises a water filling valve mounted on a water passage connected to a high-pressure fuel passage and opened when the pressure in the high-pressure fuel passage is lower than the pressure in the water passage, a fuel returning passage branched from an intermediate part of the high-pressure fuel passage and connected to a fuel tank, and a solenoid valve for opening and closing the fuel returning passage.
| JPS60187737 | DIESEL ENGINE WITH AUXILIARY INJECTION MEANS |
| JPS59158317 | PISTON |
| JP3116486 | EXHAUST EMISSION CONTROL DEVICE |
TAKAISHI TATSUO
NAGAE YOSHINORI
IWANAGA KENICHI
NUMATA AKIRA
ARAI TAKESHI
Next Patent: METHOD FOR MANUFACTURING VALVE OF SOLENOID-TYPE FUEL INJECTION VALVE