An exhaust gas recirculation line may include an at least partially flexible body. The body may include a pipe section at an end. The pipe section may be closed on a front side and may include at least two openings on a jacket side.

An exhaust gas recirculation line may include an at least partially flexible body. The body may include a pipe section at an end. The pipe section may be closed on a front side and may include at least two openings on a jacket side.

An internal combustion engine includes a main body including an attachment portion; an EGR cooler including a portion fastened to the main body; and an EGR valve including a fixing portion fastened to the attachment portion with a bolt and a connection portion fastened to the EGR cooler. A pin is fixed to one of the fixing portion and the attachment portion. An insertion hole into which the pin is inserted is arranged in the other one of the fixing portion and the attachment portion. An inner diameter of the insertion hole is greater than an outer diameter of the pin, and a value obtained by subtracting the outer diameter of the pin from the inner diameter of the insertion hole is less than a value obtained by subtracting a shank diameter of the bolt from an inner diameter of a bolt hole in the fixing portion.

An internal combustion engine includes a main body including an attachment portion; an EGR cooler including a portion fastened to the main body; and an EGR valve including a fixing portion fastened to the attachment portion with a bolt and a connection portion fastened to the EGR cooler. A pin is fixed to one of the fixing portion and the attachment portion. An insertion hole into which the pin is inserted is arranged in the other one of the fixing portion and the attachment portion. An inner diameter of the insertion hole is greater than an outer diameter of the pin, and a value obtained by subtracting the outer diameter of the pin from the inner diameter of the insertion hole is less than a value obtained by subtracting a shank diameter of the bolt from an inner diameter of a bolt hole in the fixing portion.

A system for connecting housing elements of a device for heat transfer having a housing with a first housing element and a second housing element which are connectable with one another with face sides oriented toward one another and via a connection under form closure. Housing elements are herein in contact on another with side margins developed in proximity of front faces. The first latching elements are implemented as recesses each with a flat surface oriented in parallel to front face. On an outer side of side margin of first housing element between each first latching element and front face, a shaping is developed protruding from side margin, which comprises on a side facing first latching element a flat surface disposed in the plane spanned by flat surface of first latching element. Flat surfaces of first latching element and the shaping form a contiguous bearing area for second latching element.

A system for connecting housing elements of a device for heat transfer having a housing with a first housing element and a second housing element which are connectable with one another with face sides oriented toward one another and via a connection under form closure. Housing elements are herein in contact on another with side margins developed in proximity of front faces. The first latching elements are implemented as recesses each with a flat surface oriented in parallel to front face. On an outer side of side margin of first housing element between each first latching element and front face, a shaping is developed protruding from side margin, which comprises on a side facing first latching element a flat surface disposed in the plane spanned by flat surface of first latching element. Flat surfaces of first latching element and the shaping form a contiguous bearing area for second latching element.

Systems are provided for aligning and assembling an exhaust gas recirculation (EGR) assembly with an engine intake housing. In one example, an intake system may include an EGR port housing for coupling the EGR assembly on an intake housing. The EGR port housing may include one or more alignment tabs on at least one side of the EGR port housing for aligning and guiding the EGR assembly during installation onto the intake housing.

Systems are provided for aligning and assembling an exhaust gas recirculation (EGR) assembly with an engine intake housing. In one example, an intake system may include an EGR port housing for coupling the EGR assembly on an intake housing. The EGR port housing may include one or more alignment tabs on at least one side of the EGR port housing for aligning and guiding the EGR assembly during installation onto the intake housing.

An intake and exhaust system of an engine mounted on a vehicle is provided, which includes an intake passage and an exhaust passage, and an exhaust gas recirculation (EGR) passage configured to introduce a portion of exhaust gas to the intake passage as EGR gas. The exhaust passage includes an exhaust gas purifier including an inlet part and an outlet part for the exhaust gas, that is disposed so that the exhaust gas flows horizontally, a branch connected to the outlet part and configured to branch in vehicle up-and-down directions a channel of the exhaust gas after being purified by the exhaust gas purifier, and a guide connected to the branch and configured to guide the exhaust gas below the outlet part. The EGR passage is connected to the branch and guides the EGR gas upward.

An intake and exhaust system of an engine mounted on a vehicle is provided, which includes an intake passage and an exhaust passage, and an exhaust gas recirculation (EGR) passage configured to introduce a portion of exhaust gas to the intake passage as EGR gas. The exhaust passage includes an exhaust gas purifier including an inlet part and an outlet part for the exhaust gas, that is disposed so that the exhaust gas flows horizontally, a branch connected to the outlet part and configured to branch in vehicle up-and-down directions a channel of the exhaust gas after being purified by the exhaust gas purifier, and a guide connected to the branch and configured to guide the exhaust gas below the outlet part. The EGR passage is connected to the branch and guides the EGR gas upward.