Vehicle or stationary power plant having a turbocharged internal combustion engine as a drive source

Abstract

A vehicle or stationary power plant having an internal combustion engine as a drive source and having components adapted to be supplied with heat from a medium accommodated in a closed loop. The turbine of the exhaust gas turbocharger provided for turbocharging the internal combustion engine acts as a heat source. A heat exchanger is disposed externally on the turbine housing and can be incorporated or switchable into the medium loop. The medium can be conveyed directly or channeled through the interior of the heat exchanger, and the medium is adapted to be heated up in such interior utilizing at least thermal radiation energy from the hot turbine housing

Description

[0001]This specification for the instant application should be granted the priority date of Mar. 15, 2006, the filing date of the corresponding German patent application 10 2006 011 797.2.BACKGROUND OF THE INVENTION [0002]The present invention relates to a vehicle or a stationary power plant.[0003]In a vehicle or a stationary power plant, an array of components and units, such as crankcase, cylinder heads, radiators, and containers, which have a medium that is accommodated in a closed loop flowing through them, is disposed on the internal combustion engine which forms a drive or motive power source, and in its surroundings. In the case of a cooling bop, providing electrical auxiliary units, via which the coolant is heatable, is known for improving the cold start behavior of the internal combustion engine and for more rapid availability of heating warmth. These electrical auxiliary heaters are typically relatively expensive and load the energy-providing battery because of their high ...

AI Technical Summary

Benefits of technology

[0006]The present Invention is directed to the fact that the turbine of the exhaust gas turbocharger of an internal combustion engine is the assembly which becomes warm and / or hot and radiates heat most rapidly after its cold start. Until now, the waste heat of the turbine has been viewed as rather troublesome, in particular when it is nearly red-hot in full-load operation. Vehicle parts situated in the surroundings of the hot turbine are partitioned from the effect of heat which is too strong by insulating walls or heat shields, in addition, the turbine is intensively cooled. In contrast, the present invention makes use of the rapid heating of the turbine, by using it entirely intentionally as a heat source for a medium that is to be heated. This is performed via a heat exchanger which is situated externally on the turbine housing. The medium to be heated may be conducted through its interior either directly or channeled. When conducted through directly, the medium absorbs heat from the hot turbine housing, more or less depending on the dwell time in the heat exchanger interior or on the flow velocity, if the medium to be heated is conducted channeled through the interior of the heat exchanger, the possibility exists of additionally feeding or conducting exhaust gas of the internal combustion engine into the heat exchanger interior, so that the heat content of the exhaust gas is additionally usable for heating the medium, in addition to the radiant energy of the turbine housing.

[0008]The way according to the present invention of warming or heating the medium permits greatly varying usages of this medium heated in this way because of the high possible energy introduction—even connected with a change of the physical state from liquid to vaporous. Such an application is, for example, the rapid warming up of the liquid coolant (water or coolant water mixed with antifreeze) of an internal combustion engine after its cold start. In other applications, the heated medium is conducted via a heat consumer incorporated or switched into the medium loop, such as a container, so that the liquid stored or located therein may be warmed or heated or may be prevented from freezing or may be thawed rapidly after a cold start of the internal combustion engine. This heat consumer may, for example, be a storage container for a urea-water solution or a windshield, headlight, and / or outside mirror cleaning liquid, or a radiator which conducts coolant water or a coolant water equalizing container. However, electrical storage batteries for vehicle heaters are also beatable using the medium heated according to the present invention. The medium heated according to the present invention may, for example, also be supplied in a touring bus or mobile home to the hot water container of the onboard kitchen or the washing water storage container of the onboard toilet for the purpose of heating or keeping warm or as a freezing protection. Furthermore, the medium, if it is a low-boiling liquid, may be converted from the liquid into its vaporous state as it flows through the turbine-side heat exchanger and may be supplied to a steam turbine in this vaporous state, by which it may be converted into mechanical drive energy to deliver power.

Problems solved by technology

Until now, the waste heat of the turbine has been viewed as rather troublesome, in particular when it is nearly red-hot in full-load operation.

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