Engine and engine refrigerant discharge method
By installing bottom and pipe drain ports in the engine and using an ice point meter and control unit to control valves and water pumps, the problem of insufficient coolant discharge rate caused by water in the engine water circuit is solved, achieving complete discharge of coolant and avoiding the risk of engine freezing due to water accumulation.
CN117345402BActive Publication Date: 2026-08-18WEICHAI POWER CO LTD
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Patent Information
- Application Number
- CN202311406155.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-26
- Publication Date
- 2026-08-18
- Estimated Expiration
- 2043-10-26
AI Technical Summary
Technical Problem
The engine's water system is complex, and water accumulation in some areas can lead to insufficient coolant discharge, posing a risk that the water may freeze, expand, and crack the engine.
Method used
A bottom drain port and a pipe drain port are installed in the engine, and the actual freezing point value of the coolant is monitored by a freezing point meter. The control unit controls the valve and water pump to drain the coolant, ensuring that the coolant is completely drained in a low-temperature environment.
Benefits of technology
It enables the complete drainage of coolant in low-temperature environments, avoiding expansion damage to the engine caused by water freezing and simplifying the operation process.
✦ Generated by Eureka AI based on patent content.
Abstract
The application discloses an engine and an engine refrigerant discharging method, which comprises an engine body, a water pump, a bottom water outlet, a freezing point instrument, a control unit and at least one pipeline water outlet. The bottom water outlet is arranged at the bottom of the engine body, and the pipeline water outlet is arranged at the corner of the pipeline in the engine body. The water inlet of the water pump is connected with each pipeline water outlet. The freezing point instrument is used for measuring the actual freezing point value of the refrigerant in the engine. When the user injects the refrigerant into the engine, the control unit determines that the target standard freezing point value corresponding to the target freezing point threshold interval to which the actual freezing point value belongs is higher than the ambient temperature, controls the bottom water outlet to discharge the first refrigerant in the engine, and controls the water pump to extract the second refrigerant in the engine through the pipeline water outlet. Thus, the problem that the refrigerant discharging rate of the engine does not meet the requirements due to the complex structure of the engine waterway and the water storage in some areas is solved.
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