Hybrid electric vehicle with a motor cooling system

A hybrid electric vehicle comprising:

• b. a fuel tank;
• c. a fuel wherein the fuel is in fluid state and stored inside the fuel tank;
• d. a fuel vapor space inside the fuel tank containing a fuel vapor;
• e. a fuel path connected to the fuel tank whereby the fuel can flow through the fuel path;
• f. an energy conversion engine connected to the fuel path wherein the fuel can flow into the energy conversion engine whereby the energy conversion engine extracts chemical energy from the fuel and produces electricity to power the hybrid electric vehicle;
• g. a fuel heat exchanger in thermal contact with the fuel wherein a first coolant fluid can flow through the fuel heat exchanger and transfer heat to the fuel;
• h. a first motor cooling chamber in thermal contact with an electric motor wherein the first coolant fluid can flow through the first motor cooling chamber and remove heat from the electric motor;
• i. a first cooling circuit, connected to the fuel heat exchanger and the first motor cooling chamber, comprising a coolant pump, wherein the first coolant fluid circulates through the cooling circuit, whereby the coolant pump controls the throughput of the first coolant fluid through the first cooling circuit, to regulate a flow of heat between the electric motor and the fuel, and maintain the pressure in the fuel tank within a predetermined range;
• j. a feedback loop that increases the heat transferred from the electric motor to the fuel when the electric motor demands higher levels of power and generates higher levels of heat, whereby fuel preheating increases, and the throughput of preheated fuel available to the energy conversion engine increases as power demand from the electric motor increases.