Showing papers on "Afterburner published in 1985"

Method and apparatus for operating a piston driven internal combustion engine having an exhaust gas turbocharger

Abstract: An apparatus and method for operating a piston driven internal combustion engine having an exhaust gas turbocharger, provides for the exhaust gases of the cylinders to be conducted to an afterburner chamber and subsequently to the exhaust gas turbine of the turbocharger when the motor vehicle is coasting, ie, when the motor vehicle and engine are being driven by the vehicle's inertia, with the ignition for the cylinders being turned off and the charging air being introduced into the afterburner chamber The noncombusted fuel/air mixture from the cylinders is combusted in the afterburner chamber with the additional charging air to thereby bring the turbocharger to its full output for reacceleration of the engine

Exhaust gas silencer-purifier, especially for internal-combustion engines

Abstract: The i.c. engine exhaust gas silencer and cleaner consists of a casing with a main intake (1) for the gases. A secondary intake (2) with non-return valves (3-5) is situated around the main intake and is used to receive additional air. The silencer also has an axial fan (7) and an afterburner chamber (14). The chamber is the shape of a hollow housing (15), with inlets (17) and outlets (19) containing electrical heater, and it is followed by catalytic elements (20,21). The outer casing is thermally and acoustically insulated. Its inner walls are aerodynamically shaped to follow the transformations of the gases as they pass through the different sections.

Exhaust gas afterburner

Abstract: An afterburner device for injecting fresh air laterally into the exhaust gas streams of a multiple cylinder internal combustion engine. The afterburner has a planar gasket section for mounting between the engine block and the exhaust manifold. Exhaust gas stream port holes extend laterally through the gasket section in alignment with similar port holes in the engine block and manifold. A plurality of fresh air input passages within the gasket section extend from the port holes to a fresh air supply plenum section of the afterburner.

Afterburning method for particulate filter

Abstract: PURPOSE:To prevent a filter from melting and improve the combustion efficiency of particulates by maintaining a perticulate filter at particular temperatures for certain times over two stages by means of an afterburner and, then, gradually reducing said temperatures. CONSTITUTION:When a selector valve 6 which is installed in a branch part 3a, is connecting, i.e., a branch pipe 3A to an exhaust pipe 3, if a control device 10 judged that the output value of a pressure sensor PA is increased indicating a particulate filter to be clogged, the selector valve is switched by an actuator 8, to connect a branch pipe 3B to the exhaust pipe 3. The control device 10 ignites a burner 7 on the branch 3A side, to burn particulates again collected in a filter 5. In this case, the afterburning temperature of the particulates is first, maintained at 600 deg.C+ or -50 deg.C for a certain time and, then, at 750 deg.C+ or -50 deg.C for a few minutes. After that an upper surface temperature is gradually lowered, completing an afterburning.

Turbosupercharging device for internal-combustion engine

Abstract: PURPOSE:To raise temperature and pressure in exhaust gas, which drives a turbine wheel, as well as to make a small-sized turbosupercharger applicable, by forming an afterburner part in an exhaust pipe, while making the afterburner part open its air pressure inlet. CONSTITUTION:Air is compressed by a comporessor wheel 2 and turns to an air- fuel mixture as fuel is fed out of a fuel injection valve 13, then fed to an internal-combustion engine 4 for combustion. Exhaust gas reaches to a turbine wheel 1 and exhausted to the atmosphere by way of an exhaust muffler 16. At this time, fresh air is fed with pressure to an afterburner chamber 9 from an air pressure inlet 10 by an air pump 11, and afterburning for the exhaust gas takes place, making its temperature and pressure go up, whereby the turbine wheel 1 and the compressor wheel 2 are driven.

Thermal-oxidising afterburner

Abstract: In order to reduce the combustion residues, such as unburnt hydrocarbons, carbon monoxide and soot, occurring in all current combustion engines, such a temperature is created in the afterburner whilst increasing the pressure by means of a retaining plate and limiting a passage that these substances can be afterburnt. Constant combustion conditions are thereby produced despite the variable engine speed and hence variable exhaust gas volumes and temperatures. At low exhaust gas temperatures an electrically operated exhaust heating is also switched on, which prevents any accumulation of solid combustion residues. A reactor part contained in the afterburner, through which a plurality of tubes passes, acts as an energy reservoir and is thus capable of imparting energy to contacting exhaust gas molecules.