T/JSAS 075-2024 Active Group standards

T/JSAS 075-2024 Variable Valve Timing System with Actuator Valve

Publish Date: 2024-12-23 Implement Date: 2025-01-02 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/JSAS 075-2024

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Automotive electronics, electrical equipment, and instrumentation

ICS Name: Comprehensive Road Vehicles

Publish Date: 2024-12-23

Implement Date: 2025-01-02

Scope

Scope: This document specifies the basic parameters, technical requirements, test methods, inspection rules, and marking, packaging, transportation, and storage requirements for drive valves (hereinafter referred to as OCV valves) used in variable valve timing systems. This document applies to drive valves for variable valve timing systems; Main technical content: 5.5.4 Response time: The response time shall not exceed 50ms. 5.5.5 Cleanliness: a) Particle weight requirements: The allowable particle weight per 1000cm2 of contact area with engine oil shall not exceed 10mg; b) Particle size requirements: For particles larger than 15μm, 99% of them shall have a length not exceeding 150μm, and the maximum particle size shall not exceed 600μm; c) When required by the customer, the overall cleanliness of the OCV valve shall meet the requirements of the customer's design drawings. 5.5.6 Oil pressure resistance: The OCV valve shall be able to withstand an abnormal oil pressure of at least 1500kPa for 10 seconds, and the performance specified in 5.5.1 to 5.5.3 shall meet the requirements after re-testing. 5.5.7 Anti-pollution: The OCV valve shall pass the anti-pollution test under the test conditions specified in 6.7.1, with a full stroke operation of 700,000 times, and the performance specified in 5.5.1 to 5.5.3 shall meet the requirements after re-testing. There shall be no abnormal wear on the surfaces of parts with relative motion, such as the valve stem and valve sleeve. 5.5.8 Anti-vibration: The OCV valve shall pass the anti-vibration test in accordance with the requirements for engine components in QC/T 413-2002. After the test, the OCV valve shall not be damaged, and there shall be no loosening of the riveted joints. 5.5.9 High and low temperature shock resistance: The OCV valve shall be able to withstand alternating temperature shocks between -40°C and 135°C. After the test, all assembly parts of the OCV valve shall not be deformed. 5.5.10 Corrosion resistance: For