Products Description Weichai WP13NG430E61 WP13 Natural Gas Engine Performance Parameter 1. Euro VI gas engine featuring stoichiometric combustion technology and a Gasoline Particulate Filter (GPF); distinct from older China IV lean-burn gas engines; 2. Large-displacement (13L) gas engine delivering high torque at low RPM, offering excellent heavy-load climbing performance; 3. Spark-ignition system (no diesel injectors); core gas system components include gas injection valves,