Signal cable used for gas engine

The utility model discloses a signal cable used for a gas engine. The signal cable comprises six signal wire cores. The signal wire cores are, from inside to outside, sequentially provided with a second wrapping layer, a second shielding layer, and an outer sheath. Each of the signal wire cores comprises two intertwisted wire cores, each of which is formed by a conductor and a first insulation layer disposed on the conductor. The surface of each of the wire cores is, from inside to outside, provided with a first wrapping layer and a first shielding layer. The first insulation layers and the outer sheath adopt the hexafluoropropylene-tetrafluoroethylene copolymer materials. The signal cable used for the gas engine is advantageous in that the excellent electrical insulation performance, the excellent heat-resistant performance, and the excellent anti-low temperature performance are provided, and the signal cable can be used in a wide temperature range from -250 DEG C to 200 DEG C for a long time.