What are domestic motorcycle engines?
2 Answers
Here is the relevant introduction to domestic motorcycle engines: 1. Jialing 223 engine - model Street Fire 223: Type: Single-cylinder, four-stroke, natural air-cooled, vertical, OHC; Displacement: 223; Compression ratio: 9.0:1; Bore × Stroke (mm × mm): 65.5 × 66.2; Rated power and corresponding speed KW/(r/min): 12/(7000±500); Maximum torque and corresponding speed N.m/(r/min): 17/(6000±500); Minimum no-load and stable speed (r/min): 1400±150; Ignition method: CDI, representative model: Jialing Street Fire 223. 2. GN250 engine: Type: Single-cylinder, four-stroke, natural air-cooled, vertical, 4-valve; Displacement: 249cc; Maximum power: 14.7kw/7500rpm; Maximum torque: 19.5kw/7000rpm; Minimum no-load and stable speed: 1400 rpm; Ignition method: Transistor type; Representative model: Suzuki GN250.
I always find domestic motorcycle engines quite interesting, mainly featuring four-stroke single-cylinder and twin-cylinder designs, such as those produced by brands like Zongshen and Lifan. Structurally, they are not overly complex, with bore and stroke designs that consider fuel economy, and horsepower output suitable for urban and rural road conditions. The technological progress of Chinese manufacturing has been rapid, using materials like aluminum alloy or cast iron, with durability significantly improved compared to a few years ago. However, compared to foreign counterparts, the power output still falls a bit short. Maintenance costs are low, parts are easy to replace, making them very user-friendly for average riders. I suggest those interested check out relevant forums to learn about the fuel system and cooling methods to avoid overheating issues. During daily rides, the power output is smooth, ideal for commuting or short trips, though sometimes the noise can be a bit loud.
