Heißer Verkauf 8N6796 Zylinderkopf für Caterpillar 3306di Motor 3306 Neue Dieselmotorteile

Q1: What is the product identification and applicable scope of the 8N6796 cylinder head for Caterpillar 3306DI engines?

Kernprodukt & Kompatibilitätsdetails

• Produktstruktur: Integriert präzisionsgefertigten Gusseisenguss, Ventilsitze, Ventilführungen, Einlass-/Auslassanschlüsse, direct injection nozzle mounting bores, Kühlmittelkanäle, und Kipphebelsockel. Die Lieferung erfolgt als einbaufertige Baugruppe, pre-fitted with sealing gaskets for critical joints to reduce on-site assembly time.
• Anwendbarer Motor: Caterpillar 3306DI engine—optimized for direct fuel injection technology, featuring improved fuel efficiency and lower exhaust emissions compared to indirect injection variants, compliant with strict industrial emission standards.
• Matched Heavy-Duty Machinery:
  • Crawler excavators: Caterpillar 330B/C, Komatsu PC300-5 (retrofit applications);
  • Wheel loaders: Caterpillar 966C/D, Liugong CLG888;
  • Mining trucks: Caterpillar 769D, small-scale off-highway transport vehicles;
  • Fixed power equipment: Industrielle Generatoren, water pumps for mining and construction sites.
• Kernanwendungsszenarien: Direkter Ersatz für defekte Original-Zylinderköpfe (z.B., Gussrisse, Ventilsitzverschleiß, Kühlmittelleck, Verformung der Einspritzdüsenbohrung) und Motorüberholungsprojekte, restoring the 3306DI engine’s compression ratio, Leistungsabgabe, und Betriebsstabilität.

Q2: What core functions does the 8N6796 cylinder head perform for Caterpillar 3306DI engines?

Kernfunktionen

1. Direct Injection Combustion Chamber Sealing
   • Versiegelt die Oberseite des Motorzylinders, um eine geschlossene Brennkammer zu bilden, Arbeiten mit dem Zylinderblock, Kolben, und Kopfdichtung, um hohem Verbrennungsdruck standzuhalten (up to 12MPa) und Temperatur (up to 1150℃) from direct fuel injection. It prevents gas leakage and ensures complete fuel atomization and combustion, optimizing the engine’s low-speed torque (≥650N·m @ 1400rpm).
2. Ventiltriebunterstützung & Luft-Kraftstoff-Steuerung
   • Provides precise mounting positions for 12 Ventile (2 Aufnahme + 2 Abgas pro Zylinder), Ventilfedern, und Kipphebel, controlling valve opening/closing timing and duration to match the direct injection system’s fuel delivery rhythm. This enhances the engine’s air-fuel mixture ratio accuracy, improving fuel efficiency by 6–8% compared to worn cylinder heads.
3. Kühlung & Optimierung der Wärmeableitung
   • Features integrated cross-flow coolant passages that surround the combustion chamber, Injektorbohrungen, und Auslassöffnungen, efficiently dissipating excess heat to prevent engine overheating during long-hour heavy-load operation (z.B., 16+ hours of quarry excavation). The passage layout is optimized for the 3306DI engine’s compact design, ensuring uniform temperature distribution across the cylinder head.
4. Direct Injection System Integration
   • Pre-machined high-precision injector mounting bores ensure accurate positioning of direct injection nozzles, enabling fuel to be sprayed directly into the combustion chamber at high pressure (up to 150MPa). This eliminates the need for a pre-combustion chamber, reducing heat loss and boosting power density.
5. Montagesockel für Zusatzkomponenten
   • Dient als Montageplattform für wichtige Motorzubehörteile, including valve covers, Ansaug-/Auslasskrümmer, turbocharger adapters, and fuel filter brackets. Its reinforced design ensures stable mounting even under high vibration (≤18g, 10–2000Hz) from heavy machinery operation.