Patent Application
20200063700
The present disclosure relates to vehicle engine air induction systems, and more particularly relates to charge air coolers and resonators employed in vehicle engine air induction systems.
Vehicle engine air induction systems are commonly equipped in automobiles to assist in the supply of air into cylinders of internal combustion engines. Superchargers and turbochargers can be provided as components in vehicle engine air induction systems to force air into the cylinders and hence improve engine efficiency. Additional components in vehicle engine air induction systems commonly include resonators and charge air coolers. The resonators reduce the sound level of the forced air before the air is supplied to the cylinders, and the charge air coolers reduce the temperature of the forced air before the air is supplied to the cylinders. The resonators and charge air coolers are typically furnished as discrete components at locations downstream of the superchargers and turbochargers. And with respect to each other, the resonators are typically installed at a location that is upstream of the charge air coolers.
In an embodiment, a vehicle charge air cooler may include an inlet housing. The inlet housing has an inlet chamber and a resonator chamber. The inlet chamber is defined by a first wall of the inlet housing and is defined by a second wall of the inlet housing. The resonator chamber is defined by the second wall of the inlet housing and is defined by a third wall of the inlet housing. The second wall separates the inlet chamber and the resonator chamber from each other. The second wall has one or more orifices residing therein. The orifice(s) span between the inlet chamber and the resonator chamber.
In an embodiment, the vehicle charge air cooler may further include a heat exchanger and an outlet housing. The heat exchanger is situated downstream of the inlet housing. And the outlet housing is situated downstream of the heat exchanger.
In an embodiment, the second wall constitutes an interior wall of the inlet housing. The first wall and third wall constitute exterior walls of the inlet housing.
In an embodiment, the second wall serves to partition the inlet chamber and the resonator chamber from each other. The second wall extends between the first wall and the third wall.
In an embodiment, the resonator chamber resides downstream of an inlet of the inlet housing. The resonator chamber further resides upstream of a heat exchanger of the vehicle charge air cooler.
In an embodiment, the second wall confronts the heat exchanger of the vehicle charge air cooler across the inlet chamber. The resonator chamber receives sound waves reflected off of a confronting face of the heat exchanger.
In an embodiment, the resonator chamber receives sound waves that travel downstream of an inlet of the inlet housing.
In an embodiment, the resonator chamber includes a first resonator chamber and includes a second resonator chamber.
In an embodiment, the resonator chamber includes a baffle wall that extends from the second wall. The baffle wall separates the first resonator chamber and the second resonator chamber from each other.
In an embodiment, a vehicle engine air induction system includes the vehicle charger air cooler.
In an embodiment, the resonator chamber constitutes the sole resonator of the vehicle engine air induction system downstream of a turbocharger of the vehicle engine air induction system.
In an embodiment, the vehicle engine air induction system lacks a discrete resonator component downstream of a turbocharger of the vehicle engine air induction system.
In an embodiment, a vehicle charge air cooler may include an inlet housing, a heat exchanger, and an outlet housing. The inlet housing has an inlet chamber and a resonator chamber. The inlet chamber and the resonator chamber are partitioned from each other by way of an interior wall of the inlet housing. The inlet chamber receives air flow from an inlet of the inlet housing. The resonator chamber resides downstream of the inlet of the inlet housing. The heat exchanger is situated downstream of the inlet housing. And the outlet housing is situated downstream of the heat exchanger.
In an embodiment, the inlet chamber is defined by a first exterior wall of the inlet housing, and is defined by the interior wall of the inlet housing.
In an embodiment, the resonator chamber is defined by a second exterior wall of the inlet housing, and is defined by the interior wall of the inlet housing.
In an embodiment, the interior wall of the inlet housing extends between exterior walls of the inlet housing.
In an embodiment, the interior wall has multiple orifices that reside in the interior wall. The orifices span between the inlet chamber and the resonator chamber.
In an embodiment, the resonator chamber includes a baffle wall. The baffle wall partitions the resonator chamber into a first resonator chamber and a second resonator chamber.
In an embodiment, a vehicle engine air induction system includes the vehicle charge air cooler.
In an embodiment, a vehicle charge air cooler may include an inlet housing and a heat exchanger. The inlet housing has an inlet chamber and a resonator chamber. The inlet chamber is defined by an exterior wall of the inlet housing and is defined by an interior wall of the inlet housing. The resonator chamber is defined by the exterior wall of the inlet housing and is defined by the interior wall of the inlet housing. The resonator chamber resides downstream of an inlet of the inlet housing. The inlet chamber and the resonator chamber are partitioned from each other by way of the interior wall of the inlet housing. The interior wall has multiple orifices that reside in the interior wall. The orifices span between the inlet chamber and the resonator chamber. The heat exchanger is situated downstream of the inlet housing.
One or more aspects of the disclosure will hereinafter be described in conjunction with the appended drawings, wherein like designations denote like elements, and wherein:
With reference to the figures, a vehicle engine air induction system 10 is equipped with a vehicle charge air cooler (CAC) 12 having the functionality of a resonator integrated into the design and construction of the charge air cooler 12. A discrete resonator component—typically installed immediately upstream of a CAC in past systems and intended for higher pressures—hence need not be provided in the engine air induction system 10. Rather, the sound level reduction effect of the discrete resonator component is incorporated into the charge air cooler 12. As a result, the charge air cooler 12 more readily satisfies packaging demands which can oftentimes be inflexible in automotive applications. Indeed, the charge air cooler 12 and its resonator functionality optimizes packaging and removes design and construction constraints otherwise in place with a discrete resonator component, so that enhanced air flow uniformity through the charge air cooler 12 can be executed. Yet other advancements, depending on the particular application, may include minimizing joints and potential leak paths in the vehicle engine air induction system 10, facilitation of manufacturing and assembly operations, reduced overall weight, and decreased overall costs. The charge air cooler 12 is described below in the context of an automotive application, yet could be equipped in non-automotive applications as well.
As used herein, the terms downstream and upstream are employed with reference to air flow traveling through the charge air cooler 12, such that downstream refers to a direction with air flow travel, and upstream refers to a direction that is opposite or against the direction of air flow travel.
The engine air induction system 10 supplies air into internal combustion engine cylinders. In the example of
The charge air cooler 12 lowers the temperature of forced air that passes through it and before the air makes its way to the internal combustion engine 18. Removing heat from the forced air increases the density of the air and improves the efficiency and effectiveness of the internal combustion engine 18. Unlike previously-known charge air coolers, the charge air cooler 12 has a resonator chamber 22 built into its structure. In this way, the functionalities of reduced sound levels and reduced temperatures are combined into a single device. The charge air cooler 12 can have various designs, constructions, and components in different embodiments depending upon—among other possible factors—the designs and constructions and components of upstream and downstream regions of the engine air induction system 10, and the intended magnitude of sound level reduction. In the embodiment presented by
The inlet housing 24 receives forced air flow immediately downstream of the turbocharger 14 and directs the air flow to the heat exchanger 26. The inlet housing 24 can have different designs and constructions in different embodiments. With particular reference to
The resonator chamber 22 acts as a Helmholtz resonator that attenuates the sound level produced by forced air flow traveling through the inlet housing 24 and interacting with the resonator chamber 22. The resonator chamber 22 resides at a location that is downstream of a location of the inlet 30. A third wall 44 partly defines and bounds the resonator chamber 22. In this embodiment, the third wall 44 is also a second exterior wall 46 of the inlet housing 24. Indeed, in this embodiment, the first and second exterior walls 36, 46 are sections of a larger monolithic exterior wall of the inlet housing 24. The interior wall 40 also partly defines and bounds the resonator chamber 22. Together, the second exterior wall 46 and the interior wall 40 make-up a double-walled portion of the inlet housing 24 and form the structural boundaries of the resonator chamber 22.
For effecting the resonator function, the interior wall 40 has multiple orifices 48 residing in its structure and spanning between the resonator chamber 22 and the inlet chamber 32. In a sense, the interior wall 40 serves to partition and divide what would otherwise be a larger chamber into two separate chambers, the inlet chamber 32 and the resonator chamber 22. The interior wall 40 can be a unitary extension of other walls of the inlet housing 24, or can initially be constructed as a distinct structure that is subsequently attached to the other walls of the inlet housing 24 such as by welding. Depending on its form, the interior wall 40 can be constructed via injection molding processes, additive manufacturing techniques like three-dimensional (3D) printing, or another fabrication process. In the embodiment of
With particular reference to
By having the resonator chamber 22 and incorporating the attendant sound level attenuation functionality into the charge air cooler 12, as described, packaging demands are more readily satisfied in certain applications, and especially in automotive applications in the vicinity of an internal combustion engine which can be particularly inflexible and particularly challenging. The packaging requirements introduced by a discrete resonator component are altogether eliminated in the embodiments set forth in this description. This also removes the design and construction constraints that would otherwise be imposed on the vehicle engine air induction system 10 and on the charge air cooler 12 with a discrete resonator component. Removing such constraints allows a design and construction of the charge air cooler 12 that might not otherwise be possible, such as the design and construction of the charge air cooler 12 of the figures. For instance, and referring now to
The heat exchanger 26 is the section of the charge air cooler 12 that provides temperature reduction to the air that flows through the heat exchanger 26. The heat exchanger 26 is situated at a location in the charge air cooler 12 that is downstream of the inlet housing 24 and that is upstream of the outlet housing 28. The heat exchanger 26 can be of different types in different embodiments, and in the example of
It is to be understood that the foregoing is a description of one or more aspects of the disclosure. The disclosure is not limited to the particular embodiment(s) disclosed herein, but rather is defined solely by the claims below. Furthermore, the statements contained in the foregoing description relate to particular embodiments and are not to be construed as limitations on the scope of the disclosure or on the definition of terms used in the claims, except where a term or phrase is expressly defined above. Various other embodiments and various changes and modifications to the disclosed embodiment(s) will become apparent to those skilled in the art. All such other embodiments, changes, and modifications are intended to come within the scope of the appended claims.
As used in this specification and claims, the terms “e.g.,” “for example,” “for instance,” “such as,” and “like,” and the verbs “comprising,” “having,” “including,” and their other verb forms, when used in conjunction with a listing of one or more components or other items, are each to be construed as open-ended, meaning that the listing is not to be considered as excluding other, additional components or items. Other terms are to be construed using their broadest reasonable meaning unless they are used in a context that requires a different interpretation.
