68318470AA
BOSCH 68318470AA Yüksek Basınç Enjektörü Jeep Wrangler JL Alfa 2.0L Hurricane
68318470AB, 0261500448, 0261500449, 50052349Multi-Hole Laser Drilled Solenoid Actuated Direct Injection Nozzle-200 barUyumlu Araçlar ve Motorlar
| Araç | Motor | Model Yılları |
|---|---|---|
| Jeep Wrangler JL 2.0T | 2.0L GME T4 Hurricane 200kW | 2018-2024 |
| Jeep Grand Cherokee 2.0T 4xe | 2.0L GME T4 Hybrid 280kW | 2022-2024 |
| Alfa Romeo Giulia 2.0T | 2.0L GME MultiAir 206kW | 2017-2024 |
Teknik Özellikler
| Özellik | Değer |
|---|---|
| Sistem Tipi | Bosch HDEV5 Multi-Hole Direct Gasoline Fuel Injector |
| Çalışma BasıncıTemel Değer | |
| Spray Pattern | Asymmetrical 6-orifice pattern engineered for deep chamber penetration |
| Fuel Rail Bolt Torque | 12 N·m (holding bracket fasteners) |
| High Pressure Pipe Torque | 27 N·m Flare Nut Connection |
| Coil Resistance | 1.4 - 1.8 Ω at 20°C (High performance peak-and-hold excitation) |
| Tipik Arıza Kodları | P0300 (Random Misfire), P0301-P0304 (Cylinder Misfire), P0172 (Fuel System Rich Bank 1) |
| Workshop Precaution | Install new Teflon combustion tip seals using expanding mandrel and sizing collar |
Uyumlu Yüksek Basınç Pompası (Yakıt Devresi Grubu)
Aynı yüksek basınçlı Common Rail devresinde çalışır. Düşük basınç (P0087) teşhisinde enjektörleri değiştirmeden önce pompa debisini kontrol edin.
Montaj İpuçları
- [
- {
- "step": 1,
- "title": "Relieve Fuel System Residual Pressure",
- "instruction": "Depressurize high pressure fuel system using diagnostic scan tool or fuel pump relay isolation. Disconnect battery negative terminal."
- },
- {
- "step": 2,
- "title": "Disconnect Wiring Harness & Fuel Rail Hard Lines",
- "instruction": "Unclip wiring harness from all four injectors. Loosen the high pressure fuel crossover pipe (27 N·m) and unbolt fuel rail fasteners (12 N·m)."
- },
- {
- "step": 3,
- "title": "Extract Injectors & Fit New Teflon Chamber Seals",
- "instruction": "Use slide hammer tool to extract direct injectors from cylinder head. Install new blue Teflon seals using calibration guide sleeves."
- },
- {
- "step": 4,
- "title": "Torque Rail Fasteners & Verify High Pressure Seal",
- "instruction": "Seat injectors into cylinder ports. Torque rail bolts to 12 N·m. Tighten steel high pressure line to 27 N·m. Prime fuel system and check for leaks."
- }
- ]
Ariza Kodlari (DTC) ve Teshis Protokolleri
Bu common rail enjektorunde asinma, devre arizasi veya kalibrasyon kaymasi olustugunda tetiklenen yaygin ariza kodlari (DTC):
Fuel Rail / System Pressure Too Low
Excessive internal backleak from worn control valve seats drops common rail pressure below target under engine load.
Injector Circuit Malfunction / Open Circuit
Solenoid coil resistance drift (0.2-0.5 Ω) or piezo stack degradation triggers driver stage shutdown on affected cylinders.
Cylinder Misfire & Balancing Deviation
Carbon-clogged nozzle spray holes or missing IMA calibration causes uneven cylinder contribution. Recode ECM and verify washer seating.
Fuel Rail / System Pressure Too High
Spill line backpressure or stuck metering valve prevents rail depressurization, creating overpressure risks under load.
Teknik Arıza Teşhis ve Servis Protokolleri
Bu parça grubu için doğrulanmış atölye prosedürleri, test eşik değerleri ve servis talimatları.