Adaptive system of supplying lubricant to the internal combustion engine E P Barylnikova, A T Kulakov and O A Kulakov -Particular mechanism for continuously varying the compression ratio for an internal combustion engine S Raiu, R Ctlinoiu, V Alexa et al. Abstract. The large amount of heat is scattered in the internal combustion engine through exhaust gas, coolant, convective and radiant heat transfer. Of all these residual heat sources, exhaust gases have the potential to recover using various modern heat recovery techniques. Waste heat recovery from an engine could directly reduce fuel consumption, increase available electrical power and improve overall system efficiency and if it would be used a turbochargers that can also produce energy. This solution is called turbo aggregation and has other ways to develop it in other areas of research like the electrical field. [1-3]
IntroductionThe design of road transport engines is even more focused on reducing emissions. Recently, greenhouse gas commitments have brought new technological challenges. Exhaust gas recovery has great potential, given the amount of mechanical or electrical work that could be generated on board. The paper considers the recovery that could be obtained from exhaust gases that expand them into an additional turbine (turbo-mixing). Over the years, the road transport sector has faced a period of strong technological change to reduce harmful emissions and, more recently, CO2 emissions, for example fuel consumption. The real technological surprise was that the emission reduction was achieved without losing the expected mechanical performance of the engine (torque, speed, driving fun, etc.). The results obtained were excellent: over the last two decades, the specific power (per unit of swept volume) increased by a factor of 1.5, while the emission level was 10 times. The EURO limits have progressively (and significantly) reduced steps, producing cleaner and more powerful engines.[4] One of today's biggest challenges for reducing CO2 emissions is energy recovery, a key sector due to quantitative importance: the exhaust gases of an internal combustion engine have an energy content equal to about one-third of the chemical energy of the fuel. [5][6] The first type of recovery seems to be more technologically simpler than the second one, which introduces a clear complexity when handled on board. The first recovery, which has the nature of direct recovery, is addressed in the literature as a turbo blend and has been extensively treated. Many manufacturers (John Deere, Volvo, Caterpillar), especially heavy engines, have already applied turbocharging, but have been very focused on the possibility of extra-mechanical power. Recently, in the literature, the possibility of having an energy recovery due to the turbo mix in the form of electricity has gained interest. [7]
