A heater comprises a combustion chamber and a jacket extending about the combustion chamber. There is a fan having an output which communicates with the combustion chamber to provide combustion air. There is also a fuel delivery system having a variable delivery rate. A burner assembly is connected to the combustion chamber. The burner assembly has a burner mounted thereon adjacent the combustion chamber. The burner receives fuel from the fuel delivery system. There is an exhaust system extending from the combustion chamber. An oxygen sensor is positioned in the exhaust system to detect oxygen content of exhaust gases. There is a control system operatively coupled to the oxygen sensor and the fuel delivery system. The control system controls the delivery rate of the fuel delivery system according to the oxygen content of the exhaust gases.

A heater comprises a combustion chamber and a jacket extending about the combustion chamber. There is a fan having an output which communicates with the combustion chamber to provide combustion air. There is also a fuel delivery system having a variable delivery rate. A burner assembly is connected to the combustion chamber. The burner assembly has a burner mounted thereon adjacent the combustion chamber. The burner receives fuel from the fuel delivery system. There is an exhaust system extending from the combustion chamber. An oxygen sensor is positioned in the exhaust system to detect oxygen content of exhaust gases. There is a control system operatively coupled to the oxygen sensor and the fuel delivery system. The control system controls the delivery rate of the fuel delivery system according to the oxygen content of the exhaust gases.

The present invention relates to an apparatus installed in a vehicle for recovering exhaust heat. The apparatus includes: a housing having therein a heat exchanger and having a front through hole through which exhaust gas is introduced and a rear through hole through which the introduced exhaust gas is discharged; a first tube installed in the housing and having a dual tube structure; and a second tube connected to the first tube and having a dual tube structure. A coolant introduced through the second tube passes through the first tube and exchanges heat with the exhaust gas in the heat exchanger in the housing. The coolant, which has exchanged heat, is discharged to an engine through the first tube and the second tube.

The present invention relates to an apparatus installed in a vehicle for recovering exhaust heat. The apparatus includes: a housing having therein a heat exchanger and having a front through hole through which exhaust gas is introduced and a rear through hole through which the introduced exhaust gas is discharged; a first tube installed in the housing and having a dual tube structure; and a second tube connected to the first tube and having a dual tube structure. A coolant introduced through the second tube passes through the first tube and exchanges heat with the exhaust gas in the heat exchanger in the housing. The coolant, which has exchanged heat, is discharged to an engine through the first tube and the second tube.

An engine system for an off-highway vehicle includes a diesel engine configured to drive a driveline of the vehicle; an after-treatment arrangement configured to reduce emissions from the engine system; an after-treatment heating element configured to raise an operating temperature of the after-treatment arrangement; an electric energy storage device; and a controller configured to direct energy from the electric energy storage device to the after-treatment heating element in order to raise the operating temperature of the after-treatment arrangement.

A coolant heater for a vehicle includes: a housing unit having an inlet part through which a coolant is introduced and an outlet part through which the coolant is discharged; a baffle assembly provided in an internal space of the housing unit and having a first flow path through which the coolant flows in a first direction and a second flow path through which the coolant, passing through the first flow path, flows in a second direction different from the first direction; a first heater part provided in the first flow path; and a second heater part provided in the second flow path. The coolant heater makes it possible to obtain an advantageous effect of improving a fast-acting heating performance and heating efficiency.

A coolant heater for a vehicle includes: a housing unit having an inlet part through which a coolant is introduced and an outlet part through which the coolant is discharged; a baffle assembly provided in an internal space of the housing unit and having a first flow path through which the coolant flows in a first direction and a second flow path through which the coolant, passing through the first flow path, flows in a second direction different from the first direction; a first heater part provided in the first flow path; and a second heater part provided in the second flow path. The coolant heater makes it possible to obtain an advantageous effect of improving a fast-acting heating performance and heating efficiency.

An engine system for an off-highway vehicle, comprising: a diesel engine configured to drive a driveline of the vehicle; an after-treatment arrangement configured to reduce emissions from the engine system; an after-treatment heating element configured to raise an operating temperature of the after-treatment arrangement; an electric energy storage device; and a controller configured to direct energy from the electric energy storage device to the after-treatment heating element in order to raise the operating temperature of the after-treatment arrangement.

An engine system for an off-highway vehicle, comprising: a diesel engine configured to drive a driveline of the vehicle; an after-treatment arrangement configured to reduce emissions from the engine system; an after-treatment heating element configured to raise an operating temperature of the after-treatment arrangement; an electric energy storage device; and a controller configured to direct energy from the electric energy storage device to the after-treatment heating element in order to raise the operating temperature of the after-treatment arrangement.

The present disclosure provides a vehicle control device including: a fluid circuit, mutually connecting an engine, a vehicle cabin interior heat exchanger for discharging heat into a vehicle cabin interior, and a heat discharging heat exchanger included in a refrigerant cycle in which a refrigerant is compressed and expanded by a compressor, and in which a fluid circulates; and a control unit for controlling the compressor and the engine such that, in a case in which engine warm-up operation ending conditions have not been established and in a case in which predetermined stopping conditions, other than the warm-up operation ending conditions, for stopping engine idling have been established, the compressor is operated while the engine is idling so as to release heat from the refrigerant from the heat discharging heat exchanger and to heat the fluid.