Adapters for measuring turbulent flow in combustion chambers for internal combustion engines

摘要

The spark plug type is used to measure the turbulent flow rate of the combustion chamber for the internal combustion engine, which can be mounted commonly to all the internal combustion engines and can be easily inserted and removed so that the manufacturing cost is low and the time for preparing the experiment can be shortened. To provide an adapter,;A spark plug of a cylinder head 10 for guiding a laser beam irradiated from a laser probe 26 to a measurement point 28 on the combustion chamber 2 side to measure a turbulent flow rate of a gas mixture flowing into a combustion chamber for an internal combustion engine An adapter case (18) mounted on the sphere (8) and formed to be mountable to a spark plug mounting hole (8) formed in the cylinder head (10); Laser light refraction means fixed to the inner periphery of the adapter case (18) and refracting the laser light irradiated from the laser probe (26) so that the laser light can be focused on the measurement point (28) in the combustion chamber (2); And an adapter for measuring the turbulence velocity in the combustion chamber for an internal combustion engine including the mounting means for fixing the laser light refracting means to a fixed position of the adapter case (18).