Engine assembly with engine and cooler compartments

Patent metadata

Field	Value
Publication number	US-11092122-B2
Application number	US-201916717350-A
Country	US
Kind code	B2
Filing date	Dec 17, 2019
Priority date	Jun 29, 2017
Publication date	Aug 17, 2021
Grant date	Aug 17, 2021

Abstract

An engine assembly includes an engine compartment containing an internal combustion engine and a cooler compartment adjacent the engine compartment containing a heat exchanger. The engine and cooler compartments have an opening defined therebetween. A forced air system is operable to drive an airflow. A method for cooling the engine and its compartment is disclosed.

First claim

The invention claimed is:

1. An engine assembly within an aircraft vehicle, the aircraft vehicle having a longitudinal axis defined from a front end to a rear end, the engine assembly comprising:
an engine compartment and a cooler compartment serially disposed in a direction of the longitudinal axis of the vehicle, the engine and cooler compartments separated from one another;
an internal combustion engine disposed within the engine compartment;
a heat exchanger disposed within the cooler compartment;
a forced air system in the cooler compartment operable to drive an airflow through the heat exchanger and;
an exhaust duct fluidly connecting an exhaust of the internal combustion engine with an environment of the engine assembly, the exhaust duct extending through the cooler compartment.

2. The engine assembly as defined in claim 1 , wherein the engine and cooler compartments are separated from one another by a firewall.

3. The engine assembly as defined in claim 2 , wherein the firewall extends transversely to the longitudinal axis.

4. The engine assembly as defined in claim 1 , wherein the heat exchanger is adjacent an inlet of the cooler compartment.

5. The engine assembly as defined in claim 1 , wherein the heat exchanger is fluidly connected to a cooling circuitry of an internal combustion engine of the engine assembly.

6. The engine assembly as defined in claim 1 , wherein the forced air system is operable to drive an airflow along a flow path extending from an inlet of the cooler compartment to an outlet of the cooler compartment through the heat exchanger and an interior of the cooler compartment, the heat exchanger providing heat exchange relationship between a fluid of the internal combustion engine of the engine assembly and the airflow from the forced air system.

7. The engine assembly as defined in claim 1 , wherein the forced air system includes an outlet duct defining the communication between an outlet of the cooler compartment and the environment of the engine assembly, the engine compartment and the cooler compartment being serially disposed in a direction of a longitudinal axis of the outlet duct.

8. The engine assembly as defined in claim 1 , wherein the internal combustion engine and the cooler compartment are serially disposed in a direction parallel to a shaft of the internal combustion engine.

9. The engine assembly as defined in claim 1 , wherein a width of the engine assembly decreases along the longitudinal axis toward the rear end of the aircraft vehicle.

10. An aircraft vehicle including two engine assemblies each corresponding to the engine assembly as defined in claim 1 , wherein the two engine assemblies are laterally offset from one another.

Assignees

• Pratt & Whitney Canada

Inventors

• Dionne Luc
• Villeneuve Bruno
• Julien Andre
• Dussault Serge

Classifications

• F01P3/18

  Arrangements or mounting of liquid-to-air heat-exchangers (such arrangements on cylinders or cylinder heads F01P3/04; relative to vehicles B60K11/04) · CPC title

• F02M35/10157

  Supercharged engines · CPC title

• F02M35/10203

  Rotary, e.g. "Wankel", engines; Engines with cylinders in star arrangement; Radial piston engines; W-engines (F02M35/112 and F02M35/116 take precedence) · CPC title

• F01P7/14

  the coolant being liquid · CPC title

• F02B37/00

  Engines characterised by provision of pumps driven at least for part of the time by exhaust · CPC title