Audi Ag

Stephan Adam

Markus Störmer

Dieter Lachner

Axel Pohlmann

Steffen Triebe

Joachim Doerr

Stefan Rank

An internal combustion engine includes a cylinder crankcase and a cylinder head that includes an integrated exhaust manifold, wherein the cylinder crankcase, the cylinder head and the integrated exhaust manifold have a continuous water jacket that forms part of a coolant circuit of the internal combustion engine. To ensure during shut-down cooling and/or warm-up cooling of the exhaust manifold that a majority of the coolant that is fed into the water jacket reaches the exhaust manifold, while only a small portion of the coolant flows around the cylinder through the cylinder crankcase, the coolant circuit includes a collector that communicates via passage openings having reduced opening cross-sections with the water jacket, and coolant channels arranged in extension of a flow direction through the passage-openings lead to the exhaust manifold, while coolant channels branching off laterally behind the passage-openings lead to the cylinder crankcase.

Combustion engine with coolant collector for shut-down cooling and/or warm-up cooling

Coolant circuit, in particular a coolant circuit having a plurality of sub-circuitsof an internal combustion engineincludes a primary cooling circuitand a heating circuitas well as a coolant delivery pumpdisposed on a rotary actuator, with the rotary actuatorhaving a rotary-slide housingwith several portsthrough which coolant can flow, and a first and at least one second rotary slideandwhich are rotatably supported in the rotary-slide housingand have each at least one rotary-slide pass-through openingforming a flow path, wherein the portscan be brought into at least partial coincidence with the rotary-slide pass-through openingsby a rotary motion of the respective rotary slideand/or), wherein a first branchof the primary cooling circuitleads from the internal combustion enginevia a main radiatorto a main radiator portof the first rotary slide and can be controlled by the first rotary slide, and that a second branchof the primary cooling circuitleads from an outletof the coolant delivery pumpto the internal combustion engineand can be controlled by the second rotary slide

Coolant circuit

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Lenting, Germany

Stephan Adam