Fuel Injection Pump
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This page explains how Delivery Valve is classified within Motor Vehicle Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.
A precision valve component within a fuel injection pump that controls the release of pressurized fuel to the injectors.
Technical details and manufacturing context for Delivery Valve
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Cracking Pressure | 0.15–0.35 MPa | Pressure at which valve lifts off seat |
| Flow Rate | 2.5–6.0 L/min | At rated pressure and 30°C fuel |
| Leakage Rate | ≤0.5 mL/min | At 0.8 MPa differential pressure |
| Stroke | 2.0–3.5 mm | Affects fuel delivery volume |
| Seat Diameter | 6–10 mm | Determines flow area |
| Valve Lift | 0.8–1.5 mm | Maximum lift at full flow |
| Spring Force | 15–40 N | At installed length |
| Temperature Range | -40–85 °C | Continuous operation |
| Material | 20CrMo | Case-hardened steelGB/T 3077 |
| Surface Hardness | 58–62 HRC | After heat treatment |
| Weight | 0.05–0.15 kg | Typical for assembly |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
| pressure: | Up to 2000 bar |
| flow rate: | 0.5 to 10 L/min |
| temperature: | -40°C to +150°C |
| slurry concentration: | Not applicable (clean fuel only) |
Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.
Quoted from the published standard.
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The delivery valve controls the release of pressurized fuel from the high-pressure pump chamber to the injection line. It prevents fuel backflow and ensures a sharp cut-off of fuel delivery to avoid post-injection dripping.
Common materials include alloy steel and stainless steel. A case-hardened grade like 20CrMo (per GB/T 3077) is used for surface hardness, achieving 58–62 HRC after heat treatment.
Key parameters include operating pressure (1.0–1.6 MPa), cracking pressure (0.15–0.35 MPa), flow rate (2.5–6.0 L/min), leakage rate (≤0.5 mL/min), stroke (2.0–3.5 mm), seat diameter (6–10 mm), valve lift (0.8–1.5 mm), spring force (15–40 N), temperature range (-40–85°C), and weight (0.05–0.15 kg). Always confirm these with the manufacturer for your specific application.
At the end of the delivery stroke, the spring forces the valve to close rapidly, creating a pressure drop in the injection line. This pressure drop ensures a clean cut-off of fuel delivery, preventing secondary injections and post-injection dripping.
This component is essential for the following industrial systems and equipment:
Commonly used trade names and technical identifiers for Delivery Valve.
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