Product Introduction: Cylinder Head Assembly
The cylinder head assembly (part number 1003100F0016A) for the Dongfeng Dignity IX5—you know, the one that’s called Dongfeng Fengguang ix5 here in China—counts as one of the engine’s core parts. Its main jobs? Sealing the cylinders, making up the combustion chamber, and controlling when air comes in and exhaust goes out. Here’s a breakdown of what it’s all about:
First off, the engine it works with is the SFG15T. There are two versions: the low-power one tops out at 110kW, and the high-power model hits 132kW. It plays nice with either a CVT or a 6-speed manual
gearbox, too.
It uses a dual overhead camshaft system—DOHC, if you’ve heard that term before—has 16 valves total, and even supports continuous variable valve timing (that’s CVVT). All that stuff helps make the intake/exhaust process more efficient and keeps the combustion running smoother.
Material-wise, it’s aluminum alloy. Super light, and it conducts heat way better than cast iron. That not only cuts down on the engine’s overall weight but also helps save fuel, plus it cools off faster.
It’s an integrated design, too—meaning it wraps in the intake manifold, the exhaust manifold (on some models, anyway), and the little spots where you screw in the spark plugs. This makes the engine’s layout simpler and lowers the chance of leaks or issues with pipe connections.
And when they build it? They’re
super precise. The coaxiality tolerance (fancy way of saying how straight the parts line up) between the valve seat ring and the guide hole is kept to just 0.015-0.025mm. That’s key for making sure the valves seal
right and the engine runs steady.
![1003100F0016A]( "1003100F0016A")
It teams up with the cylinder block to make the combustion chamber—you know, where the fuel actually burns. That means it has to handle really hot, high-pressure gas (combustion pressure can get up to 10-15 MPa!), so it needs to be tough and hold up well to wear over time.
To keep things sealed tight, they use a multi-layer metal cylinder gasket. No coolant leaks, no engine oil dripping out—just a tight seal.
The DOHC drives the valves, which lets it control exactly when air flows in and exhaust flows out. That makes the fuel-air mix better and keeps emissions lower. For example, the high-power engine can put out a max torque of 270 N·m when it’s running between 1500 and 4000 RPM—so it feels way more responsive when you’re driving at low speeds.
Also, since the exhaust manifold is integrated into the cylinder head, the exhaust gas has a shorter path to travel. That cuts down on turbo lag (the delay when you hit the gas) and makes the turbo work more efficiently.
Inside, there are cooling water channels that hook up to the cylinder block’s
cooling system. That way, the hot spots—like the area around the combustion chamber—stay cool enough, so the engine doesn’t overheat.
There are also oil channels built in. These keep moving parts—things like the camshaft and valve rocker arms—lubricated and cool. No squeaky parts, no extra wear—just smooth running.
![1003100F0016A]( "1003100F0016A")
Summary
To wrap things up, that cylinder head assembly with the part number 1003100F0016A? It’s a super important part of the Dongfeng Fengguang ix5’s engine. The way it’s designed packs in some pretty advanced tech—like making it lightweight, getting the engine to burn fuel more efficiently, and keeping emissions in check.
It doesn’t just affect one thing, either: it has a direct impact on how much power the engine puts out and how well it saves fuel. And on top of that, it makes a huge difference for the whole car’s reliability—plus how much you’ll end up spending on maintenance down the line.
![1003100F0016A]( "1003100F0016A")
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