Vehicle-mounted high-pressure gas supply system with adiabatic gas cylinder

By designing a high-pressure gas supply system for vehicle-mounted insulated gas cylinders, the problems of engine power decline and emission deterioration caused by low-pressure supply are solved. It achieves efficient gas recovery and precise control, ensuring stable engine operation and safety, and is suitable for various media and vehicle models.

CN224381283UActive Publication Date: 2026-06-19SHANDONG AUYAN NEW ENERGY TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG AUYAN NEW ENERGY TECH CO LTD
Filing Date
2025-07-04
Publication Date
2026-06-19

AI Technical Summary

⚠Technical Problem

In existing technologies, low-pressure liquefied natural gas and liquid hydrogen fuel engines suffer from problems such as power degradation, worsening emissions, increased heat load, and unstable operation. Traditional cryogenic insulated gas cylinders are prone to medium instability when the critical pressure and temperature reach the limit values, affecting storage and safety.

⚗Method used

A vehicle-mounted insulated gas cylinder high-pressure gas supply system was designed, including a fuel storage container, a pressurization circuit, a high-pressure gas supply circuit, a gas recovery circuit, and an electronic control unit. Through the combination of components such as a liquid level sensor, a cryogenic high-pressure pump, and a cooler, precise control and high-pressure gas supply are achieved, and a gas recovery circuit is provided to reduce waste and emissions.

🎯Benefits of technology

It achieves efficient recovery and utilization of fuel gas, reduces environmental pollution and fuel waste, ensures stable engine operation and safety, and is suitable for various media such as liquefied natural gas, liquid hydrogen, liquid ammonia, methanol, etc., and is applicable to various vehicle models and scenarios.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of vehicle-mounted new energy technology, specifically a vehicle-mounted insulated gas cylinder high-pressure gas supply system. The system includes a fuel storage container, a pressurization circuit, a high-pressure gas supply circuit, a gas recovery circuit, and an electronic control unit. A liquid level sensor is installed inside the fuel storage container, connected to an external liquid level display system. The pressurization circuit includes an integrated valve, a cryogenic high-pressure pump, a hydraulic pump, and a cooler assembly. The high-pressure gas supply circuit includes, in series, an outlet check valve, a pressure holding valve, a cryogenic gas sensor, a normal-temperature gas temperature sensor, a high-pressure gas pressure sensor, a gas buffer tank, and a pressure regulating valve. The gas recovery circuit includes, in series, a gas return control valve, a first gas filter, and a return check valve. This vehicle-mounted insulated gas cylinder high-pressure gas supply system can recover gas, reducing environmental pollution and fuel waste, and is suitable for various media such as liquefied natural gas, liquid hydrogen, liquid ammonia, and methanol.
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