| 摘要 |
PROBLEM TO BE SOLVED: To provide an internal combustion engine fuel temperature estimation apparatus capable of appropriately estimating the temperature of fuel supplied to intake passage injection valves and cylinder injection valves irrespective of the operation state of an internal combustion engine.SOLUTION: An internal combustion engine fuel temperature estimation apparatus comprises: intake-passage-fuel-temperature estimation means 61 predicting a heat reception amount of fuel in a first fuel supply passage 70, and estimating the temperature of intake passage fuel supplied to intake passage injection valves 15 from a prediction result and the temperature of tank fuel in a fuel tank 19; and cylinder-fuel-temperature estimation means 62 predicting a heat reception amount of fuel in a second fuel supply passage 80, and estimating the temperature of cylinder fuel supplied to cylinder injection valves 16 from a prediction result and the temperature of the tank fuel.SELECTED DRAWING: Figure 1 |
