Heat exchanger for a motor vehicle exhaust
First Claim
1. A heat exchanger for a motor vehicle exhaust, comprising:
- an outer tubular body having peripheral sidewalls, an interior cavity, a first end and a second end;
an inner tubular body having fluid impervious sidewalls formed out of a single length of conduit wound in a spiral coil, the spiral coil having an exterior surface and an interior surface, the inner tubular body disposed within the interior cavity of the outer tubular body spaced from the peripheral sidewalls, thereby providing a first flow channel between the exterior surface of the inner tubular body and the peripheral sidewalls of the outer tubular body, and a second flow channel along the interior surface of the inner tubular body;
the conduit of the spiral coil having an inlet end and an outlet end, whereby fluid is circulated through the coil;
an exhaust pipe connection at each of the first end and the second end of the outer tubular body, whereby exhaust from an exhaust pipe is diverted through the interior cavity of the outer tubular body.
0 Assignments
0 Petitions
Accused Products
Abstract
A heat exchanger for a motor vehicle exhaust includes an outer tubular body and an inner tubular body. The outer tubular body has peripheral sidewalls, an interior cavity, a first end and a second end. The inner tubular body has fluid impervious sidewalls formed out of a single length of conduit wound in a spiral coil. The spiral coil has an exterior surface and an interior surface. The inner tubular body is disposed within the interior cavity of the outer tubular body spaced from the peripheral sidewalls. This provides a first flow channel between the exterior surface of the inner tubular body and the peripheral sidewalls of the outer tubular body, and a second flow channel along the interior surface of the inner tubular body. The conduit of the spiral coil has an inlet end and an outlet end, whereby fluid is circulated through the coil.
-
Citations
13 Claims
-
1. A heat exchanger for a motor vehicle exhaust, comprising:
-
an outer tubular body having peripheral sidewalls, an interior cavity, a first end and a second end; an inner tubular body having fluid impervious sidewalls formed out of a single length of conduit wound in a spiral coil, the spiral coil having an exterior surface and an interior surface, the inner tubular body disposed within the interior cavity of the outer tubular body spaced from the peripheral sidewalls, thereby providing a first flow channel between the exterior surface of the inner tubular body and the peripheral sidewalls of the outer tubular body, and a second flow channel along the interior surface of the inner tubular body; the conduit of the spiral coil having an inlet end and an outlet end, whereby fluid is circulated through the coil; an exhaust pipe connection at each of the first end and the second end of the outer tubular body, whereby exhaust from an exhaust pipe is diverted through the interior cavity of the outer tubular body. - View Dependent Claims (2)
-
-
3. A heat exchanger for a motor vehicle exhaust, comprising:
-
an outer tubular body having peripheral sidewalls, an interior cavity, a first end and a second end; an inner tubular body having fluid impervious sidewalls formed out of a single length of conduit wound in a spiral coil, the spiral coil having an exterior surface and an interior surface, the inner tubular body disposed within the interior cavity of the outer tubular body spaced from the peripheral sidewalls, thereby providing a first flow channel between the exterior surface of the inner tubular body and the peripheral sidewalls of the outer tubular body, and a second flow channel along the interior surface of the inner tubular body; the conduit of the spiral coil having an inlet end and an outlet end, whereby fluid is circulated through the coil; and an exhaust pipe connection at each of the first end and the second end of the outer tubular body, whereby exhaust from an exhaust pipe is diverted through the interior cavity of the outer tubular body; wherein the inner tubular body has a spiral baffle positioned in the second flow channel.
-
-
4. A heat exchanger for a motor vehicle exhaust, comprising:
-
an outer tubular body having peripheral sidewalls, an interior cavity, a first end and a second end; an inner tubular body having fluid impervious sidewalls formed out of a single length of conduit wound in a spiral coil, the spiral coil having an exterior surface and an interior surface, the inner tubular body disposed within the interior cavity of the outer tubular body spaced from the peripheral sidewalls, thereby providing a first flow channel between the exterior surface of the inner tubular body and the peripheral sidewalls of the outer tubular body, and a second flow channel along the interior surface of the inner tubular body; the conduit of the spiral coil having an inlet end and an outlet end, whereby fluid is circulated through the coil; an exhaust pipe connection at each of the first end and the second end of the outer tubular body, whereby exhaust from an exhaust pipe is diverted through the interior cavity of the outer tubular body, wherein there are several concentric inner tubular bodies.
-
-
5. In combination:
-
a hydrocarbon fuelled engine; an exhaust system including a plurality of exhaust pipes; a closed loop fluid circulation conduit through which circulates one of lubricant and coolant; a heat exchanger for a motor vehicle exhaust, comprising; an outer tubular body having peripheral sidewalls, an interior cavity, a first end and a second end; an inner tubular body having fluid impervious sidewalls formed out of a single length of conduit wound in a spiral coil, the spiral coil having an exterior surface and an interior surface, the inner tubular body disposed within the interior cavity of the outer tubular body spaced from the peripheral sidewalls, thereby providing a first flow channel between the exterior surface of the inner tubular body and the peripheral sidewalls of the outer tubular body, and a second flow channel along the interior surface of the inner tubular body; the conduit of the spiral coil having an inlet end and an outlet end, the inlet end and the outlet end being connected to the closed loop fluid circulation conduit whereby one of lubricant or coolant is circulated through the coil; an exhaust pipe connection at each of the first end and the second end of the outer tubular body, each of the first end and the second end being secured to exhaust pipes whereby exhaust from the exhaust system is diverted through the interior cavity of the outer tubular body; and the inner tubular body of the heat exchanger having a spiral baffle positioned in the second flow channel. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
-
Specification