Measurement method, and brake dust measurement program instructions
AssigneeHoriba, Ltd.
InventorsYoshinori Otsuki, Joel Danzer, Dmytro Lugovyy
Life of this patent
Estimating the term…
Abstract
In order to make it possible to measure a brake dust amount and the like even when a main flow rate is fluctuated, a brake dust measurement device that measures brake dust generated from a brake includes: a main flow path through which a sample gas containing the brake dust flows; a sampling flow path that is connected to a sampling point set in the main flow path and collects a part of the sample gas; and a flow rate control mechanism that controls a sampling flow rate that is a flow rate in the sampling flow path such that the sampling flow rate coincides with a flow rate proportional to a main flow rate that is a flow rate in the main flow path.
Claims12
A brake dust measurement device that measures brake dust generated from a brake, the brake dust measurement device comprising:
- a main flow path through which a sample gas containing the brake dust flows;
- a sampling flow path that is connected to a sampling point set in the main flow path and collects a part of the sample gas;
- a main flow meter provided on a downstream side from the sampling point in the main flow path, wherein a downstream-side end of the sampling flow path is connected, in the main flow path, between the sampling point and the main flow meter such that the sample gas collected into the sampling flow path is returned to the main flow path;
- and
- a flow rate control mechanism that controls a sampling flow rate that is a flow rate in the sampling flow path such that the sampling flow rate coincides with a flow rate proportional to a main flow rate that is a flow rate in the main flow path.
A brake dust measurement method that measures brake dust generated from a brake, the brake dust measurement method comprising:
- causing a sample gas containing the brake dust to flow through a main flow path;
- collecting a part of the sample gas through a sampling flow path connected to a sampling point set in the main flow path, wherein a downstream-side end of the sampling flow path is connected, in the main flow path, between the sampling point and a main flow meter provided on a downstream side from the sampling point in the main flow path such that the sample gas collected into the sampling flow path is returned to the main flow path;
- and
- controlling a sampling flow rate that is a flow rate in the sampling flow path such that the sampling flow rate coincides with a flow rate proportional to a main flow rate that is a flow rate in the main flow path.
A brake dust measurement device that measures brake dust generated from a brake, the brake dust measurement device comprising:
- a main flow path through which a sample gas containing the brake dust flows;
- a sampling flow path that is connected to a sampling point set in the main flow path and collects a part of the sample gas;
- and
- a flow rate control mechanism that controls
- a sampling flow rate that is a flow rate in the sampling flow path such that the sampling flow rate coincides with a flow rate proportional to a main flow rate that is a flow rate in the main flow path, and
- the main flow rate based on vehicle speed data representing a vehicle speed.
Dependencies are inferred from the claim text.