What Functions Should the Powertrain Have?
1 Answers
The powertrain has functions such as vehicle deceleration, speed change, reverse driving, power interruption, and inter-axle differential. The powertrain is the device that transmits power between the engine and the driving wheels, so it ensures the traction force, speed, and their coordinated changes required during vehicle operation. Below are the classifications of the powertrain: 1. Hydrostatic Powertrain: This type of powertrain can also be called a volumetric hydraulic powertrain. It mainly consists of an oil pump, hydraulic motor, and control device. This is a powertrain that converts the mechanical energy of the engine into hydraulic energy via the oil pump and then into mechanical energy via the hydraulic motor. 2. Hydraulic Powertrain: This combines hydraulic and mechanical methods to transmit power. In vehicles, hydraulic powertrain generally refers to hydraulic transmission, which uses liquid as the transmission medium and utilizes the kinetic energy changes generated during the circulating flow of liquid between the driving and driven components to transmit power. 3. Mechanical Powertrain: Compared to other powertrains, this one has a simple structure and reliable operation, which is why it is widely used in various types of vehicles. 4. Electric Powertrain: This mainly consists of an engine-driven generator. Since the generator is much heavier than the oil pump and hydraulic motor, its application is limited to ultra-heavy-duty vehicles.