ADGEX recently completed the second round of field tests of its proprietary exhaust gas recovery system for internal combustion engines, which has been in development for the past 1.5 years. More than three months ago, the system was successfully tested for the first time on a 3 kW gasoline engine. And in September 2025, on a 5 kW single-cylinder diesel engine. In both cases, positive results were achieved, generating additional mechanical energy equal to 20-25% of engine power during operation in various modes.
It's common knowledge that in modern internal combustion engines, approximately 30-35% of the energy generated during fuel combustion is lost through the exhaust pipe, which is a waste and significantly reduces engine efficiency. ADGEX designers set themselves the goal of recovering some of this energy as useful energy—and they succeeded.
The exhaust energy recovery device is installed on the internal combustion engine's exhaust pipe instead of the exhaust pipe. The recovery system has no effect on engine efficiency, either at idle or under load. Furthermore, the installation of the recovery system does not affect the engine's fuel consumption in any operating mode. The recovery system is effective on both 4-stroke and 2-stroke engines.
The result of the conversion is the kinetic energy of the recovery system's piston rod. A generator can be mounted on the piston rod, enabling the generation of electrical energy. Alternatively, the recovered energy can be transferred to the engine shaft via a pulse gearbox, resulting in a 20-25% reduction in engine fuel consumption when operating at a given operating mode.
Exhaust gas recovery systems have a wide range of applications. ADGEX is primarily focused on their practical implementation in diesel generator sets and aims to manufacture and install such a system on a diesel generator with a capacity of at least 100 kWh in the near future.