EJECT’s is the brand name of DENSO’s world first ejector cycle technology which won the 2006 Environmental Protection Agency (EPA) Climate Protection Award. This new technology reduces energy use and greenhouse gas emissions of vehicle air conditioning, refrigeration units and residential heat pumps.

When this technology is installed in a refrigeration unit and combined with other complementary breakthroughs in components and controls, it improves efficiency by more than 50%, leading to a 70% reduction in refrigerant emissions and a 60% reduction in carbon dioxide emissions.

DENSO - World first technology

• Refrigeration cycle system for passenger vehicles using an ejector. The system is used for both an air conditioner and cooler box.

In a conventional refrigeration cycle, a solenoid valve switches between refrigerant flow for cooling in the air conditioner and refrigeration in the cooler box, which effects air conditioning performance when the cooler box is used.

In contrast, the new system eliminates the solenoid valve and uses a small refrigerant injector called an ejector instead of an expansion valve, which allows cooling via the car air conditioner and refrigeration through the cooler box simultaneously. 

By using an ejector that rapidly injects and expands high-pressure refrigerant, the energy that previously was lost in the expansion valve is converted to pressure energy and reused, thus boosting energy efficiency. As a result, high cooling and refrigeration performances are both achieved even when the cooler box is used.