The combustion engine – gasoline – can be 2 or 3 cylinders and has fully integrated electric motor and transmission, which can be configured with 1, 2 or 4 speeds according to the needs of the model in which it will be applied. The electric motor is always connected to the wheels, allowing uninterrupted torque delivery, and can be designed with different power and torque configurations. Also the battery size is easily adaptable, which allows a total drive train scalability and its application in models from segment B to large hybrid saloons or SUVs.
According to MAHLE, its new hybrid architecture is designed to reduce the demand of the combustion engine, thus helping to further reduce fuel consumption and polluting emissions. For this it has a dual operation that you It allows combining the advantages of parallel and series hybrid mechanics.
As in any other hybrid, when the battery charge level is high, the vehicle can function as a pure electric; If the load level is low, and at slow driving speeds, switch to hybrid mode in series. At higher speeds, the combustion engine is the one who directly moves the wheels and the system works like a parallel hybrid.
According to MAHLE, the weight of its modular hybrid mechanics is similar to that of a 4-cylinder petrol engine coupled to a 6-speed manual transmission. The fact of having all its components fully integrated allows a very compact set and, in addition, the combustion engine allows to reduce the cost by up to 30%. This gasoline engine has been specifically designed for hybrid applications and features technologies such as the MAHLE Jet Ignition, a small pre-combustion chamber that allows a high compression ratio and increases gas recirculation exhaust, which reduces fuel consumption. Then, in the combustion chamber, multipoint injection is used, and to reduce costs, a simple configuration of a single overhead camshaft (SOHC) with only 2 valves per cylinder and without variable valve elevation has been chosen.
According to MAHLE, the gasoline engine has achieved consumption figures of 207 g / kWh, although they expect to reduce it to 195 g / kWh. Translated to more everyday dimensions, applied in a compact hybrid SUV, they calculate that this new architecture will allow CO2 emissions of 18 g / km in WLTP cycle. For the German supplier, its MMHP modular power train offers car manufacturers a "fast and economical" solution for the electrification process that the industry is experiencing, and in which the actors involved have to reduce the CO2 emissions of their fleets to 59.4 g / km by 2030.