[3Fp01-10] Latest trends of sealing inspections and leak testing: Vacuum Technologies Division's Session

[3Fp04] Current status and future prospects of helium leak testing in the automotive industry.

*Masataka Shiromaru¹, Kazumi Enomoto¹, Mitugu Nakagawa¹, Hiroki Kurisu² (1. MARUNAKA Corporation, Ltd., 2. Graduate School of Science and Technology for Innovation, Yamaguchi University)

Many automotive components are required to be airtight against gases and liquids, and leak testing is carried out during the manufacturing process to ensure quality. The bell jar method of helium leak testing (JIS Z 2331) is widely used for leak testing of various automotive components as it allows quantitative leak tests of 10^-4 Pam³s^-1 or less. This paper describes the performance of the vacuum chamber leak testing system and the innovations in leak testing for each specimen under test. High-pressure liquid leak testing for the use of high-pressure fuels in engines in next-generation vehicles will also be presented.