Abstract: A spring assembly is mounted on a crankshaft for a vehicle. A selector mechanism for the spring assembly selectively connects the spring assembly to the crankshaft. The selector mechanism is engaged in a first position to connect the spring to the crankshaft when the engine is shut-off such that the crankshaft winds the spring as it rotates. The selector mechanism is then engaged in a second position such that the spring applies a rotational force to re-start the engine. A method for braking the engine includes engaging the crankshaft with the torsion spring and winding the torsion spring with rotation of the crankshaft until the tension within the torsion spring is greater than the force applied to the crankshaft.

Abstract: An engine assembly may include a crankcase ventilation assembly having a fuel separator assembly. The fuel separator assembly may include a condensing unit and a vaporizing unit. The condensing unit may include a gas region and a liquid retaining region. A gas inlet may be in fluid communication with the gas region and a gas flow from the engine block including fuel vapor. The condensing unit may convert the fuel vapor to liquid fuel. The first gas outlet may be in fluid communication with an engine air inlet and provide a remainder of the gas flow thereto. The fluid region may store and provide the liquid fuel to the vaporizing unit through a liquid inlet. The vaporizing unit may convert the liquid fuel to fuel vapor and a second gas outlet may provide the fuel vapor to the air inlet.

Abstract: A spring assembly is mounted on a crankshaft for a vehicle. A selector mechanism for the spring assembly selectively connects the spring assembly to the crankshaft. The selector mechanism is engaged in a first position to connect the spring to the crankshaft when the engine is shut-off such that the crankshaft winds the spring as it rotates. The selector mechanism is then engaged in a second position such that the spring applies a rotational force to re-start the engine. A method for braking the engine includes engaging the crankshaft with the torsion spring and winding the torsion spring with rotation of the crankshaft until the tension within the torsion spring is greater than the force applied to the crankshaft.

Abstract: An engine assembly may include a crankcase ventilation assembly having a fuel separator assembly. The fuel separator assembly may include a condensing unit and a vaporizing unit. The condensing unit may include a gas region and a liquid retaining region. A gas inlet may be in fluid communication with the gas region and a gas flow from the engine block including fuel vapor. The condensing unit may convert the fuel vapor to liquid fuel. The first gas outlet may be in fluid communication with an engine air inlet and provide a remainder of the gas flow thereto. The fluid region may store and provide the liquid fuel to the vaporizing unit through a liquid inlet. The vaporizing unit may convert the liquid fuel to fuel vapor and a second gas outlet may provide the fuel vapor to the air inlet.