Jiangsu Tianwang Solar Technology Co., Ltd. is one of the leading automatic advance cdi ignition module for uav, rc gasoline engines & model aircraft manufacturers and suppliers in China. Please feel free to buy or wholesale high quality products for sale here from our factory. Customized orders are welcome.
TW-G-DHQ Automatic Advance Igniter – High‑Performance CDI Ignition for Small UAVs & Model Aircraft
Product Overview
What Is Automatic Advance Ignition?
Automatic advance ignition is an electronic control technology that adjusts spark timing according to engine speed. At low RPM, ignition occurs closer to top dead center to ensure smooth idling. As RPM increases, ignition timing advances to allow complete combustion before the piston reaches peak position.
The TW-G-DHQ Automatic Advance Igniter is a compact capacitor discharge ignition (CDI) module engineered by Jiangsu Tianwang Solar Technology Co., Ltd specifically for small unmanned aerial vehicles (UAVs) – including fixed‑wing model aircraft, racing drones, and compact multi‑rotor platforms.
This advanced ignition system integrates an intelligent automatic advance control that continuously adjusts the ignition timing according to engine speed. From idle (800 RPM) all the way to full throttle (7200 RPM), the igniter ensures optimal combustion efficiency, delivering smoother throttle response, improved fuel economy, and reliable operation in the air. Whether you are flying a FPV racer, a surveying drone, or a scale model warbird, this CDI unit provides consistent, dependable spark performance.
Key Features – Why Choose an Automatic Advance Igniter?
⚡ Intelligent Automatic Advance – Unlock Your Engine's Full Potential
The built‑in microcontroller reads the engine's RPM signal in real time and automatically advances or retards the spark timing according to a pre‑set advance curve. This automatic advance technology offers three tangible benefits:
Higher combustion efficiency – extracts more power from every drop of fuel, extending flight endurance for small UAVs.
Sharper throttle response – instant power delivery makes your aircraft more agile and predictable.
Reduced knock at high RPM – protects the engine from detonation, prolonging its service life.
💪 High‑Energy CDI Spark – Reliable Starts in Any Condition
As a premium CDI igniter, this unit delivers an output voltage of ≥18 kV – enough to produce a fat, hot spark that fires up your gasoline model engine quickly even in cold weather or at high altitudes. The strong spark also minimises the risk of in‑flight flame‑out, a critical advantage for drone operations.
📦 Ultra‑Compact Form Factor – Built for Small Airframes
Measuring just 51.4 × 39.4 × 29.2 mm, this miniature ignition module is one of the smallest on the market. Its lightweight construction saves precious space inside cramped fuselages and makes wiring easy, especially for small fixed‑wing UAVs and tight multi‑rotor frames.
🔋 Wide Voltage Input – Compatible with Mainstream Drone Power
The igniter accepts DC 6V – 14.4V, covering the output range of common 2S to 4S Li‑Po batteries and most BEC regulators. No additional voltage converter is needed – simply plug and play.
🛡️ Fully Potting‑Sealed – Ready for Outdoor Missions
Rated for ‑20°C to +60°C ambient temperature, this unit withstands seasonal outdoor flights. It passes a 1500V dielectric strength test and features a full epoxy‑potting seal that protects against moisture, vibration, oil, and dust – so you can trust it even in turbulent weather and high‑vibration engine bays.
Technical Specifications – TW-G-DHQ Automatic Advance CDI
| Parameter | Value | Notes |
|---|---|---|
| Model Number | TW-G-DHQ | Automatic advance CDI igniter |
| Input Voltage | DC 6V – 14.4V | Compatible with 2S‑4S Li‑Po |
| Output Voltage | ≥ 18 kV | High‑energy CDI spark |
| Quiescent Power | < 1 W | Extremely low standby drain |
| Dynamic Power | < 8 W | Minimal heat generation |
| RPM Range | 800 – 7200 RPM | Covers the full operating band of typical model gasoline engines |
| Operating Temperature | -20°C to +60°C | Suitable for year‑round outdoor use |
| Storage Temperature | -20°C to +80°C | |
| High‑Tension Lead Length | 400 mm ± 5 mm | Optimised for small UAV spark plug placement |
| Input Lead Length | 150 mm ± 5 mm | Convenient connection to power and signal |
Application Scenarios – Ideal for These Aircraft
Small fixed‑wing UAVs – hand‑launch reconnaissance planes, scale warbirds, FPV long‑range cruisers
Small gasoline‑powered multi‑rotors – professional‑grade compact drones for inspection, agriculture, or research
Gas‑powered RC cars and boats – high‑performance ground and water models requiring reliable ignition
Brand & Quality – Engineered by Jiangsu Tianwang Solar Technology
This igniter is designed and manufactured by Jiangsu Tianwang Solar Technology Co., Ltd, a company with deep expertise in renewable energy and optoelectronic control systems. Every unit is produced under strict ISO‑compliant quality management, ensuring consistent performance and long‑term reliability – even under the demanding conditions of small UAV flight operations.
Frequently Asked Questions
Q: Which engines is this igniter compatible with?
A: It works with most single‑cylinder gasoline model engines that operate in the 800‑7200 RPM range – the standard for the vast majority of small UAV powerplants.
Q: What makes the automatic advance feature beneficial?
A: By constantly optimising the spark timing for the current RPM, it ensures the engine runs at peak efficiency across the entire throttle range. This translates to better power delivery, smoother running, and improved fuel economy.
Q: How do I power the igniter?
A: Simply connect it to a DC source between 6V and 14.4V – your existing 2S‑4S Li‑Po flight battery or receiver BEC will work without any extra regulator.
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