A waste-heat collection system for a vehicle is provided. The vehicle includes an internal combustion engine and an exhaust manifold via which exhaust manifold hot exhaust gas coming from the internal combustion engine is introduced into an engine-side segment of an exhaust system. The exhaust manifold and/or the engine-side segment of the exhaust system, an exhaust gas turbocharger and/or a catalytic converter are at least partially surrounded by a waste-heat collecting housing. Air contained in the waste-heat collecting housing is heated by waste heat of these components and the heated air is used to charge a latent heat accumulator.

A waste-heat collection system for a vehicle is provided. The vehicle includes an internal combustion engine and an exhaust manifold via which exhaust manifold hot exhaust gas coming from the internal combustion engine is introduced into an engine-side segment of an exhaust system. The exhaust manifold and/or the engine-side segment of the exhaust system, an exhaust gas turbocharger and/or a catalytic converter are at least partially surrounded by a waste-heat collecting housing. Air contained in the waste-heat collecting housing is heated by waste heat of these components and the heated air is used to charge a latent heat accumulator.

A cabin heating system includes a cabin air heat exchanger, an exhaust gas heat exchanger and a heat transfer loop. The heat transfer loop circulates a gaseous heat exchange fluid between the cabin air heat exchanger and the exhaust gas heat exchanger.

A cabin heating system includes a cabin air heat exchanger, an exhaust gas heat exchanger and a heat transfer loop. The heat transfer loop circulates a gaseous heat exchange fluid between the cabin air heat exchanger and the exhaust gas heat exchanger.

A cabin heating system includes an exhaust heat exchanger having a cabin air conduit. That cabin air conduit includes a check valve, a pressure relief valve and a heat exchange section between the check valve and the pressure relief valve. The cabin heating system also includes a control module configured to maintain cabin air in the cabin air conduit at a first pressure P.sub.1 while exhaust gas in an exhaust bypass has a second pressure P.sub.2 where P.sub.1>P.sub.2.

A cabin heating system includes an exhaust heat exchanger having a cabin air conduit. That cabin air conduit includes a check valve, a pressure relief valve and a heat exchange section between the check valve and the pressure relief valve. The cabin heating system also includes a control module configured to maintain cabin air in the cabin air conduit at a first pressure P.sub.1 while exhaust gas in an exhaust bypass has a second pressure P.sub.2 where P.sub.1>P.sub.2.

A combination exhaust gas heat exchanger and noise reduction unit is disclosed, whereby a heat exchanger and a noise reduction member are arranged side-by-side and integrated as a unit. A heat exchanger outlet opens directly into a chamber of the noise reduction member. In one arrangement, a bypass valve serves to selectively direct exhaust gas into either the heat exchanger or the noise reduction member, depending on an operating condition of an associated engine.

A combination exhaust gas heat exchanger and noise reduction unit is disclosed, whereby a heat exchanger and a noise reduction member are arranged side-by-side and integrated as a unit. A heat exchanger outlet opens directly into a chamber of the noise reduction member. In one arrangement, a bypass valve serves to selectively direct exhaust gas into either the heat exchanger or the noise reduction member, depending on an operating condition of an associated engine.

A refrigeration system for cooling a refrigeration compartment. The refrigeration system comprises a cooling reservoir for cooling refrigerant in a first loop using energy recovered from an engine exhaust stream and a refrigeration circuit comprising a compressor drivable by an internal combustion motor, the compressor circulating refrigerant in a second loop. The refrigeration system comprises at least one heat exchanger in communication with the first and second loops to receive cooled refrigerant, and at least one blower for forcing air over the at least one heat exchanger. A controller selectively activates the internal combustion motor based on a temperature of the cooling reservoir.

A refrigeration system for cooling a refrigeration compartment. The refrigeration system comprises a cooling reservoir for cooling refrigerant in a first loop using energy recovered from an engine exhaust stream and a refrigeration circuit comprising a compressor drivable by an internal combustion motor, the compressor circulating refrigerant in a second loop. The refrigeration system comprises at least one heat exchanger in communication with the first and second loops to receive cooled refrigerant, and at least one blower for forcing air over the at least one heat exchanger. A controller selectively activates the internal combustion motor based on a temperature of the cooling reservoir.