The invention provides a three-way catalytic converter preheating control method and system, a vehicle and a storage medium. The includes when the temperature of an exhaust pipe of the hybrid electric vehicle is lower than a first temperature threshold value, sending a first work instruction; the high-low pressure conversion module outputting a first working voltage according to the first working instruction so as to start preheating of a catalyst in a three-way catalytic converter; when working data of the hybrid electric vehicle meets the switching condition, sending a second working instruction to make the high-low voltage conversion module outputs a second working voltage and stops outputting the first working voltage so as to stop the electric heating. According to the invention, two working modes can be provided, and the power battery can be used for electrically heating the catalyst in advance through the high-low pressure conversion module.

Cooling systems of a work vehicle that provide targeted cooling, regenerative cooling and/or a combination therein. A cooling system includes plural fans configured to provide airflow across a radiator and a fan controller in communication with the plural fans. The fan controller is configured to receive operating condition data associated with at least one of the radiator and an engine. The fan controller is configured to determine a total target heat rejection value based on the operating condition data; determine a plurality of target fan operation values for the plural fans, based on the total target heat rejection value and the operating condition data; and control operation of the plural fans at plural independent fan speeds based on the plural fan operation values.

A power supply system for a vehicle includes a high-voltage battery that supplies electric power to an on-vehicle motor, a low-voltage battery that supplies electric power to a plurality of on-vehicle auxiliary machines, a DC/DC converter that changes voltage of an output from the high-voltage battery and supplies the resulting output to the low-voltage battery, and a controller that detects a working state of at least one of the plurality of on-vehicle auxiliary machines and controls operation of the DC/DC converter in accordance with the detected working state.

A vehicle comprises a motor, a power supply, a load, and a fuel system. The power supply system comprises a DC bus, a turbine generator operatively connected to the DC bus, and a battery system operatively connected to the DC bus. The load is operatively connected to the DC bus. The fuel system supplies fuel to the motor and the turbine generator. The turbine generator supplies a power signal to the DC bus based on fuel from the fuel system. The motor operates based on fuel from the fuel system.

A vehicle comprises a motor, a power supply, a load, and a fuel system. The power supply system comprises a DC bus, a turbine generator operatively connected to the DC bus, and a battery system operatively connected to the DC bus. The load is operatively connected to the DC bus. The fuel system supplies fuel to the motor and the turbine generator. The turbine generator supplies a power signal to the DC bus based on fuel from the fuel system. The motor operates based on fuel from the fuel system.

An electrically powered vehicle system including a battery, the terminals of which supply positive and negative power rails, and including a bulk capacitor located in series with a switching device, and being electrically connected between the power rails. A heater having a heating resistance is connected in series with a heater switch, and is electrically connected between the power rails. A link is electrically connected between a point between the bulk capacitor and the switching device to a point between heating resistance and the heater switch.

An electrically powered vehicle system including a battery, the terminals of which supply positive and negative power rails, and including a bulk capacitor located in series with a switching device, and being electrically connected between the power rails. A heater having a heating resistance is connected in series with a heater switch, and is electrically connected between the power rails. A link is electrically connected between a point between the bulk capacitor and the switching device to a point between heating resistance and the heater switch.

Systems are disclosed for providing a work vehicle with a second air conditioning compressor driven by a small engine mounted on the work vehicle. The second compressor shares a refrigeration loop with the primary air conditioning compressor of the work vehicle. The small engine may be configured to drive various loads, and accordingly may include control circuitry to manage the power provided to the various loads, including the second compressor.

Systems are disclosed for providing a work vehicle with a second air conditioning compressor driven by a small engine mounted on the work vehicle. The second compressor shares a refrigeration loop with the primary air conditioning compressor of the work vehicle. The small engine may be configured to drive various loads, and accordingly may include control circuitry to manage the power provided to the various loads, including the second compressor.

A system for providing power includes a control and a switch. The control is configured to indicate providing parallel power to a vehicle mounted device. The switch is configured to connect power in parallel to the vehicle mounted device, where connecting power in parallel includes back current protection.