مجموعة منطق سخان زيت الوقود FAW: انهيار شامل ل 17 المكونات الرئيسية

مرحبًا بك في هذا الدليل الفني الشامل حول مجموعة منطق سخان زيت الوقود FAW (الجزء لا. 1312010-74ت), a critical system for all-weather reliability on the FAW Jiefang CA4251P66K24T1A3E5 6×4 جرار نصف مقطورة ديزل. This assembly is the engine’s primary defense against cold-weather fuel gelling.

ال مجموعة منطق سخان زيت الوقود FAW is a sophisticated heat-exchanger system. إنه “منطق” is to use hot engine coolant to heat the diesel fuel *before* it reaches the filters. This action prevents the paraffin wax in cold diesel from crystallizing (“التبلور”), which would clog the fuel filters and starve the engine of fuel.

يعد هذا الدليل موردًا أساسيًا للفنيين المحترفين والمتخصصين في قطع الغيار. سنقوم بتفكيك الكل مجموعة منطق سخان زيت الوقود FAW فيه 17 مكونات صالحة للخدمة, including the main heater, the auxiliary electromagnetic pump, all coolant and fuel plumbing, and the mounting brackets.

المكون الأساسي: The Fuel Heater Assembly (1312010-74ت)

قلب ال مجموعة منطق سخان زيت الوقود FAW is the ‘Fuel Heater Assembly’ (1312010-74ت). This is the main heat exchanger. إنه أ “السائل إلى السائل” أكثر برودة, operating in reverse: it uses hot liquid (سائل التبريد) to heat a cold liquid (وقود).

This unit is typically a “plate-style” أو “shell-and-tube” exchanger. Hot engine coolant is forced through one set of internal passages, while cold diesel fuel from the tank is forced through a separate, alternating set of passages. The two fluids never touch, but the heat from the 80-90°C coolant is efficiently transferred through the thin metal plates to the sub-zero fuel.

This action raises the fuel temperature well above its “cloud point,” ensuring the paraffin wax stays in a liquid state. فشل هذا مجموعة منطق سخان زيت الوقود FAW جوهر (على سبيل المثال, an internal leak) is catastrophic. It can force high-pressure coolant into the fuel system, contaminating the injectors, or force diesel fuel into the cooling system, destroying all rubber hoses and seals. This makes the integrity of the مجموعة منطق سخان زيت الوقود FAW paramount.

The Coolant “الأنابيب” حلبة (1312035-74ت)

ال مجموعة منطق سخان زيت الوقود FAW cannot create heat; it can only transfer it. ال “الأنابيب” components are responsible for tapping into the engine’s main cooling system to acquire this heat. This circuit includes:

• ‘Fuel Heater Inlet Water Hose’ (1312038-74ت)
• ‘Fuel Heater Outlet Water Hose’ (1312041-74ت)
• ‘Fuel Heater Inlet/Outlet Steel Pipe Assembly’ (1312035-74ت)
• ‘Return Water Hose’ (1312031-74ت)

This system works by tapping hot coolant from a high-temperature point (مثل السكن الحرارة) and routing it through the ‘Inlet Water Hose’ to the ‘Fuel Heater Assembly’. The ‘Steel Pipe Assembly’ يوفر جامدة, protected path along the chassis or engine. After the coolant has transferred its heat, the now-cooler fluid is sent back to the low-pressure side of the water pump via the ‘Outlet Water Hose’ and ‘Return Water Hose’. This continuous circulation is the “منطق” التابع مجموعة منطق سخان زيت الوقود FAW.

These hoses are secured with ‘Worm Drive Hose Clamps’ (CQ67630B). A leak in any of these components will not only disable the مجموعة منطق سخان زيت الوقود FAW, but will also cause the engine to lose coolant and overheat.

ال “منطق”: Electromagnetic Pump Assembly (1312020-74ت)

The most advanced “منطق” مكون من مجموعة منطق سخان زيت الوقود FAW is the ‘Electromagnetic Pump Assembly – with wire harness’ (1312020-74ت). This is a critical auxiliary pump.

The engine’s main water pump is mechanical and only circulates coolant when the engine is running. This is a problem on a sub-zero “cold start.” ال مجموعة منطق سخان زيت الوقود FAW needs to heat the fuel *before* the engine starts.

This ‘Electromagnetic Pump’ هو الحل. When the driver turns the key to the “على” موضع, the ECU activates this 24V electric pump. This pump immediately begins to circulate hot coolant from the (still warm from a block heater, or a Webasto-style heater) engine block, through the ‘Fuel Heater Assembly’, and back to the engine. هذا “pre-heat” cycle runs for 30-60 seconds *before* the starter is engaged, ensuring the fuel in the lines is already warm and de-gelled.

This pump, with its integrated ‘wire harness’, هو “مخ” الذي يجعل مجموعة منطق سخان زيت الوقود FAW an *active* system, not a passive one. It is likely routed via the ‘Three-way Joint Assembly’ (1312070-29ت), which allows coolant to be sourced from either this pump or the main water pump, depending on whether the engine is on or off. ال مجموعة منطق سخان زيت الوقود FAW‘s effectiveness depends entirely on this pump.

بين قوسين, الأختام, والسحابات

كامل مجموعة منطق سخان زيت الوقود FAW ثقيل, fluid-filled unit that must be protected from vibration. The ‘Fuel Heater Bracket Assembly’ (1312050-74ت) هو الدعم الهيكلي الرئيسي. It bolts to the chassis, and the ‘Fuel Heater Assembly’ then bolts to this bracket.

Additional ‘Bracket’ (3406111-20الخامس) units are used to secure the rigid ‘Steel Pipe Assembly’ (1312035-74ت) and the ‘Electromagnetic Pump’, preventing them from fatiguing and cracking.

The system is sealed with the ‘Gasket ring’ (CQ72327) and ‘Joint’ (1312036-74ت), which are single-use crush washers for the fluid connections. كامل مجموعة منطق سخان زيت الوقود FAW is fastened with a variety of high-grade hardware: 'مسامير شفة سداسية’ (Q1841435, س1840820) و"صواميل شفة سداسية".’ (CQ39614, CQ39608). The ‘Plastic Zip Ties’ (T67420376) are used to secure the flexible hoses and wiring harness away from any hot or moving parts, completing the installation of the مجموعة منطق سخان زيت الوقود FAW.

FAW Fuel Oil Heater Logic Assembly Parts List

الجدول التالي يوفر كامل, تفصيل مفصل للجميع 17 components identified in the ‘Fuel Oil Heater Logic Assembly’ رسم تخطيطي للجرار FAW CA4251P66K24T1A3E5. هذا مجموعة منطق سخان زيت الوقود FAW is essential for cold-weather starting.

المواصفات الفنية وسياق التجميع

المواصفات ل مجموعة منطق سخان زيت الوقود FAW are defined by its function as an active, coolant-based heat exchanger. هذا بأكمله مجموعة منطق سخان زيت الوقود FAW is a key system for cold-weather operation.