| 摘要 |
PROBLEM TO BE SOLVED: To provide an internal combustion engine that can appreciably improve fuel economy. SOLUTION: An ionizer with a function of ionizing air is arranged in an intake system for the internal combustion engine. The ionizer is fully along the internal wall surface of the outlet of an outside air duct 1. The ionizer 5 is also disposed in the internal space at the outlet of the outside air duct 1.
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