传统的发动机多是每缸一个进气门和一个排气门，这种二气门配气机构相对比较简单，制造成本也低，对于输出功率要求不太高的普通发动机来说，就能获得较为满意的发动机输出功率与扭矩性能。排量较大、功率较大的发动机要采用多气门技术二最简单的多气门技术是三气门结构，即在一进一排的二气门结构基础上再加上一个进气门。
旨在探究一种能够提高多气门汽油机滚流进气道进气性能的新技术。
A new technique for improving the performance of the tumble inlet ports of multi-valve SI engine was proposed.
丰田公司曾在他们自己的报告中称“在对4000多辆汽车的实地检查中，没有发现一例因为电子节气门故障而产生失控加速现象。”
Toyota said its own findings show that after "more than 4, 000 on-site vehicle inspections, in no case have we found electronic throttle controls to be a cause of unintended acceleration."
丰田公司曾在他们自己的报告中称“在对4000多辆汽车的实地检查中，没有发现一例因为电子节气门故障而产生失控加速现象。”
Toyota said its own findings show that after "more than 4,000 on-site vehicle inspections, in no case have we found electronic throttle controls to be a cause of unintended acceleration."
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