Why do some engines come with a particle filter while others do not? In this video, we break down the difference between multi-point injection and direct injection. You will see why turbocharged direct-injection engines often need a particle filter, while many naturally aspirated engines do not. We also explain why carmakers keep using direct injection even though it creates more particles, and what role fuel quality plays in engine performance. #manufacturing #factorytour #factory | Oryzon tek