Engine intake air temperature management system
First Claim
1. A system for managing engine intake air temperature, comprising:
- an internal combustion engine situated in an engine compartment of a vehicle and having an air intake manifold,a turbocharger having a compressor defining an inlet and an outlet,a charge air cooler having an inlet and an outlet fluidly coupled to the air intake manifold,a first air flow control device having an inlet fluidly coupled to the outlet of the compressor, a first outlet fluidly coupled to the inlet of the charge air cooler and a second outlet, the first air flow control device responsive to a first control signal to selectively control a position the first air flow control device, the first air flow control device controllable between a fully open position in which the first air flow control device directs air from the outlet of the compressor only through first outlet of the first air flow control device and a fully closed position in which the first air flow control device directs air from the outlet of the compressor only through the second outlet of the first air flow control device, the first air flow control device selectively directing air from the outlet of the compressor through both of the first and second outlets of the first air flow control device in positions between the fully open and fully closed position thereof,a bypass conduit having one end fluidly coupled to the second outlet of the first air flow control device and an opposite end fluidly coupled to the air intake manifold,a second air flow control device having a first inlet, a second inlet and an outlet fluidly coupled to the inlet of the compressor, the second air flow control device responsive to a second control signal to selectively control a position the second air flow control device, the second air flow control device controllable between a fully open position in which the second air flow control device directs air from only the first inlet of the second air flow control device through the outlet of the second air flow control device and a fully closed position in which the second air flow control device directs air from only the second inlet of the second air flow control device through the outlet of the second air flow control device, the second air flow control device selectively directing air from both of the first and second inlets of the second air flow control device through the outlet of the second air flow control device in positions between the fully open and fully closed positions thereof,a first air flow conduit having one end fluidly coupled to the first inlet of the second air flow control device and an opposite end arranged to receive therein air from outside of the engine compartment,a second air flow conduit having one end fluidly coupled to the second inlet of the second air flow control device and an opposite end arranged inside of the engine compartment to receive therein air surrounding the engine,a sensor producing a temperature signal indicative of an operating temperature associated with the engine, anda processor including a memory having one or more software algorithms stored therein executable by the processor to selectively produce only the first control signal to adjust the position of the first air flow control device to maintain the operating temperature associated with the engine near a target operating temperature if the temperature signal indicates that a current operating temperature associated with the engine is less than the target operating temperature and the first air flow control device is not in the fully closed position thereof, and to selectively produce only the second control signal to adjust the position of the second air flow control device to maintain the operating temperature associated with the engine near the target operating temperature if the temperature signal indicates that the current operating temperature associated with the engine is less than the target operating temperature and the first air flow control device is in the fully closed position thereof.
1 Assignment
0 Petitions
Accused Products
Abstract
A system for managing engine intake air temperature may comprise a first air flow control device having an inlet coupled to an outlet of a turbocharger compressor and a first outlet coupled to an inlet of a charge air cooler. A second outlet is coupled via a bypass conduit to the air intake manifold. The first air flow control device may selectively control air flow from the compressor outlet to the charge air cooler and/or bypass conduit. The system may alternatively or additionally include a second air flow control device having a first inlet receiving air external to the engine compartment, a second inlet receiving air from within the engine compartment and surrounding the engine and an outlet providing air flow to the engine. The second air flow control device may selectively control air flow from the first and/or second inlets thereof to the engine.
36 Citations
19 Claims
-
1. A system for managing engine intake air temperature, comprising:
-
an internal combustion engine situated in an engine compartment of a vehicle and having an air intake manifold, a turbocharger having a compressor defining an inlet and an outlet, a charge air cooler having an inlet and an outlet fluidly coupled to the air intake manifold, a first air flow control device having an inlet fluidly coupled to the outlet of the compressor, a first outlet fluidly coupled to the inlet of the charge air cooler and a second outlet, the first air flow control device responsive to a first control signal to selectively control a position the first air flow control device, the first air flow control device controllable between a fully open position in which the first air flow control device directs air from the outlet of the compressor only through first outlet of the first air flow control device and a fully closed position in which the first air flow control device directs air from the outlet of the compressor only through the second outlet of the first air flow control device, the first air flow control device selectively directing air from the outlet of the compressor through both of the first and second outlets of the first air flow control device in positions between the fully open and fully closed position thereof, a bypass conduit having one end fluidly coupled to the second outlet of the first air flow control device and an opposite end fluidly coupled to the air intake manifold, a second air flow control device having a first inlet, a second inlet and an outlet fluidly coupled to the inlet of the compressor, the second air flow control device responsive to a second control signal to selectively control a position the second air flow control device, the second air flow control device controllable between a fully open position in which the second air flow control device directs air from only the first inlet of the second air flow control device through the outlet of the second air flow control device and a fully closed position in which the second air flow control device directs air from only the second inlet of the second air flow control device through the outlet of the second air flow control device, the second air flow control device selectively directing air from both of the first and second inlets of the second air flow control device through the outlet of the second air flow control device in positions between the fully open and fully closed positions thereof, a first air flow conduit having one end fluidly coupled to the first inlet of the second air flow control device and an opposite end arranged to receive therein air from outside of the engine compartment, a second air flow conduit having one end fluidly coupled to the second inlet of the second air flow control device and an opposite end arranged inside of the engine compartment to receive therein air surrounding the engine, a sensor producing a temperature signal indicative of an operating temperature associated with the engine, and a processor including a memory having one or more software algorithms stored therein executable by the processor to selectively produce only the first control signal to adjust the position of the first air flow control device to maintain the operating temperature associated with the engine near a target operating temperature if the temperature signal indicates that a current operating temperature associated with the engine is less than the target operating temperature and the first air flow control device is not in the fully closed position thereof, and to selectively produce only the second control signal to adjust the position of the second air flow control device to maintain the operating temperature associated with the engine near the target operating temperature if the temperature signal indicates that the current operating temperature associated with the engine is less than the target operating temperature and the first air flow control device is in the fully closed position thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A system for managing engine intake air temperature, comprising:
-
an internal combustion engine situated in an engine compartment of a vehicle and having an air intake manifold, a turbocharger having a compressor defining an inlet and an outlet, a charge air cooler having an inlet and an outlet fluidly coupled to the air intake manifold, a first air flow control device having an inlet fluidly coupled to the outlet of the compressor, a first outlet fluidly coupled to the inlet of the charge air cooler and a second outlet, the first air flow control device responsive to a first control signal to selectively control a position the first air flow control device, the first air flow control device controllable between a fully open position in which the first air flow control device directs air from the outlet of the compressor only through first outlet of the first air flow control device and a fully closed position in which the first air flow control device directs air from the outlet of the compressor only through the second outlet of the first air flow control device, the first air flow control device selectively directing air from the outlet of the compressor through both of the first and second outlets of the first air flow control device in positions between the fully open and fully closed position thereof, a bypass conduit having one end fluidly coupled to the second outlet of the first air flow control device and an opposite end fluidly coupled to the air intake manifold, a second air flow control device having a first inlet, a second inlet and an outlet fluidly coupled to the inlet of the compressor, the second air flow control device responsive to a second control signal to selectively control a position the second air flow control device, the second air flow control device controllable between a fully open position in which the second air flow control device directs air from only the first inlet of the second air flow control device through the outlet of the second air flow control device and a fully closed position in which the second air flow control device directs air from only the second inlet of the second air flow control device through the outlet of the second air flow control device, the second air flow control device selectively directing air from both of the first and second inlets of the second air flow control device through the outlet of the second air flow control device in positions between the fully open and fully closed positions thereof, a first air flow conduit having one end fluidly coupled to the first inlet of the second air flow control device and an opposite end arranged to receive therein air from outside of the engine compartment, a second air flow conduit having one end fluidly coupled to the second inlet of the second air flow control device and an opposite end arranged inside of the engine compartment to receive therein air surrounding the engine, a sensor producing a temperature signal indicative of an operating temperature associated with the engine, and a processor including a memory having one or more software algorithms stored therein executable by the processor to selectively produce only the second control signal to adjust the position of the second air flow control device to maintain the operating temperature associated with the engine near a target operating temperature if the temperature signal indicates that a current operating temperature associated with the engine is greater than the target operating temperature and the first air flow control device is not in the fully open position thereof, and to selectively produce only the first control signal to adjust the position of the first air flow control device to maintain the operating temperature associated with the engine near the target operating temperature if the temperature signal indicates that the current operating temperature associated with the engine is greater than the target operating temperature and the second air flow control device is in the fully open position thereof. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
-
Specification