Abstract:
A system (10) for managing engine intake air temperature may comprise a first air flow control device (24) having an inlet coupled to an outlet of a turbocharger compressor (16) and a first outlet coupled to an inlet of a charge air cooler (22). A second outlet is coupled via a bypass conduit (26) to the air intake manifold (14). The first air flow control device (24) may selectively control air flow from the compressor outlet to the charge air cooler (22) and/or bypass conduit (26). The system may alternatively or additionally include a second air flow control device (30) having a first inlet receiving air external to the engine compartment, a second inlet receiving air from within the engine compartment and surrounding the engine and an outlet providing air flow to the engine. The second air flow control device (30) may selectively control airflow from the first and/or second inlets thereof to the engine.
Abstract:
The present invention relates to a device (1) for the thermal management of the intake air to an engine (3) equipped with a turbocharger (5), said device comprising: - a first heat exchanger (7) placed in the air intake circuit (9) between the compressor (5a) and the engine (3), - a second heat exchanger (10) placed on the main exhaust line (12) of the engine (3) and collecting the heat energy from the exhaust gases, transferring said energy to a heat transfer fluid circulating through a heating loop (A), the heat transfer fluid inlet (7a) of the first heat exchanger (7) being connected to the heat transfer fluid outlet (10b) of the second heat exchanger (10) and the heat transfer fluid outlet (7b) of the first heat exchanger (7) being connected directly or indirectly to the heat transfer fluid inlet (10a) of the second heat exchanger (10), so as to form the heating loop (A).
Abstract:
An engine with an active chamber, having at least one piston (2) mounted in a cylinder (1) in a sliding manner and driving a crankshaft (5) via a slider-crank device (3, 4) and operating according to a four-phase thermodynamic cycle includes: an isothermal expansion without work; a transfer-slight so-called quasi-isothermal expansion with work; a polytropic expansion with work; and an exhaust at ambient pressure, preferentially supplied by compressed air contained in a high-pressure storage tank (12), through a buffer capacity, called a working capacity (11), which is expanded at an average pressure, called a working pressure, in a working capacity, preferentially through a dynamic pressure-reducing device (13), wherein the active chamber is included in the engine cylinder, the cylinder volume being swept by the piston and divided into two separate parts, a first part forming the active chamber (CA) and a second part forming the expansion chamber (CD).