Heat exchanger

A heat exchanger, comprising:

• a plurality of plates stacked on one another in a stacking direction;
• a plurality of oil flow paths and a plurality of coolant flow paths disposed in an alternating manner in the stacking direction, each of the plurality of oil flow paths and each of the plurality of coolant flow paths defined by a respective pair of adjacent plates of the plurality of plates;
• each plate of the plurality of plates including:
• a plurality of oil passage holes including a first oil passage hole and a second oil passage hole disposed on opposite sides of the respective plate and between which one of the plurality of oil flow paths extends;
• a plurality of coolant passage holes including a first coolant passage hole and a second coolant passage hole disposed on opposite sides of the respective plate and between which one of the plurality of coolant flow paths extends;
• a plurality of through holes including (i) a first through hole disposed in the respective plate between the first oil passage hole and the first coolant passage hole and (ii) a second through hole disposed in the respective plate between the second oil passage hole and the second coolant passage hole;
• a main plate portion structured as a flat, planar portion oriented perpendicularly to the stacking direction;
• a first boss portion, a second boss portion, and a third boss portion arranged on a first side of the main plate portion;
• the first boss portion protruding from the main plate portion and surrounding (i) the first through hole and (ii) the first oil passage hole;
• the second boss portion protruding from the main plate portion and surrounding the first coolant passage hole;
• and
• the third boss portion protruding from the first boss portion and surrounding the first through hole;
• wherein the plurality of oil flow paths fluidically communicate with one another in the stacking direction via the plurality of oil passage holes;
• wherein the plurality of coolant flow paths fluidically communicate with one another in the stacking direction via the plurality of coolant passage holes;
• wherein the first boss portion protrudes in an opposite direction than second boss portion and the third boss portion;
• wherein the first boss portion of each plate of the plurality of plates abuts the first boss portion of an adjacent plate of the plurality of plates;
• and
• wherein the third boss portion of each plate of the plurality of plates abuts the third boss portion of an adjacent plate of the plurality of plates.

A heat exchanger, comprising:

• a plurality of plates stacked on one another in a stacking direction;
• a plurality of oil flow paths and a plurality of coolant flow paths disposed in an alternating manner in the stacking direction, each of the plurality of oil flow paths and each of the plurality of coolant flow paths defined by a respective pair of adjacent plates of the plurality of plates;
• each plate of the plurality of plates including:
• a plurality of oil passage holes including a first oil passage hole and a second oil passage hole disposed on opposite sides of the respective plate and between which one of the plurality of oil flow paths extends;
• a plurality of coolant passage holes including a first coolant passage hole and a second coolant passage hole disposed on opposite sides of the respective plate and between which one of the plurality of coolant flow paths extends;
• a plurality of through holes including (i) a first through hole disposed in the respective plate between the first oil passage hole and the first coolant passage hole and (ii) a second through hole disposed in the respective plate between the second oil passage hole and the second coolant passage hole;
• a main plate portion;
• a standing wall portion projecting obliquely from the main plate portion and extending along an outer perimeter of the main plate portion;
• a boss portion protruding from the main plate portion and surrounding (i) the first through hole and (ii) one of the first oil passage hole and the first coolant passage hole;
• and
• another boss portion protruding from the boss portion and surrounding the first through hole;
• wherein the plurality of oil flow paths fluidically communicate with one another in the stacking direction via the plurality of oil passage holes;
• wherein the plurality of coolant flow paths fluidically communicate with one another in the stacking direction via the plurality of coolant passage holes;
• wherein the boss portion and the another boss portion protrude in opposite directions;
• wherein the boss portion of each plate of the plurality of plates is disposed spaced apart from the standing wall portion and abuts the boss portion of an adjacent plate of the plurality of plates;
• and
• wherein the another boss portion of each plate of the plurality of plates abuts the another boss portion of an adjacent plate of the plurality of plates.