| Patent application number | Description | Published |
|---|
| 20080264149 | SYSTEM AND METHOD FOR ENGINE SOUND CALIBRATION - A method for calibrating an engine is provided. The engine includes a cylinder for combustion of a fuel. The method includes setting combustion parameters of the engine, detecting a combustion noise during combustion proximate to the cylinder, detecting an engine sound radiated from the engine during combustion, adjusting the combustion parameters and repeating the steps of detecting a combustion noise and detecting an engine sound. The method further includes generating a relationship between the combustion noises and the engine sounds, determining a combustion noise level that correlates to a predefined engine sound threshold from the relationship, adjusting a speed of the engine and a load on the engine and repeating the previous steps to determine a combustion noise level for each engine speed and engine load setting, and calibrating the engine using the combustion noise levels. | 10-30-2008 |
| 20080283684 | EXHAUST MOUNTING SYSTEM - An exhaust mounting system includes an exhaust component having a pair of ridges along an outer perimeter. A mounting band is disposed around the outer perimeter of the exhaust component between the ridges. An isolation pad is disposed between the exhaust component and the mounting bracket for absorbing vibration energy between the mounting band and the exhaust component. | 11-20-2008 |
| 20090044930 | THERMAL AND ACOUSTIC VALLEY SHIELD FOR ENGINE ASSEMBLY - A valley shield operable as a noise, fluid, and heat barrier is provided for use with an engine assembly having an engine block with two cylinder banks defining an interbank valley therebetween, and two cylinder heads secured thereto. The valley shield has a unitary body including a base with two laterally spaced side portions extending angularly outward therefrom. The body is configured to pressably fit into place proximate to the valley, between the two cylinder banks, and be secured therein by the cylinder heads. The base is oriented immediately adjacent to the interbank valley and is contoured to define an air pocket therebetween. Each lateral side portion includes a flange extending laterally therefrom to directly engage with the perimeter of the interbank valley, providing an acoustic seal therebetween. The base defines two longitudinally displaced trough portions each defining drain holes and configured to allow for gravitational evacuation of fluid therefrom. | 02-19-2009 |
| 20090056668 | Acoustic Side Cover for an Engine - An apparatus for reducing engine noise includes a side cover configured to operatively connect to a side of an engine block. The side cover has a first layer configured to be adjacent to an outer surface of the side of the engine block. The first layer is made of a first acoustic-absorbing material. The side cover also has a second layer configured to be adjacent to the first layer opposite the engine block. The second layer is a second substantially rigid material establishing an acoustic barrier and is configured to operatively support at least one engine component such as an electrical or fluid line, such as by an integrally formed fastener or channel. | 03-05-2009 |
| 20090071747 | ENGINE ACOUSTIC TREATMENT - An example embodiment of an acoustic treatment for an engine having at least one engine component extending substantially therefrom includes a base layer having a first base surface and an opposing second base surface. The first base surface is configured to mate with an exterior surface of the engine. The example embodiment also includes a secondary layer having a secondary layer mating surface and an opposing secondary layer outer surface. The secondary layer mating surface is configured to mate with the second base surface at a mating interface. The interface provides a pass-through location for the at least one engine component. | 03-19-2009 |
| 20090150042 | VEHICLE SPEED DEPENDANT CALIBRATION TRIM FOR IMPROVED FUEL ECONOMY - A control system and method for improving vehicle fuel economy is provided. A base timing module generates a base timing signal. A trim module calculates a vehicle speed compensation factor and generates a timing trim signal based on the vehicle speed compensation factor. A vehicle speed trim module adjusts a calibration parameter (such as engine timing for example) based on the base timing signal and the timing trim signal. According to some implementations, the trim module includes a base trim module and a vehicle speed compensation module. The base trim module generates a base trim signal. The vehicle speed compensation module generates the vehicle speed compensation factor. The base trim signal can be based on a speed of the engine. The base trim signal can further be based on a quantity of fuel delivered to the engine. | 06-11-2009 |
| 20090194056 | INTAKE SYSTEM WITH RESONATOR - An engine assembly may include an engine block, first and second cylinder heads, and a first and second intake manifolds. The engine block may include a first bank defining a first set of cylinders and a second bank defining a second set of cylinders. The first cylinder head may be fixed to the first bank and the second cylinder head may be fixed to the second bank. The first intake manifold may be fixed to the first cylinder head and may include a first acoustic tuning mechanism in communication with the first intake manifold. The second intake manifold may be fixed to the second cylinder head and may include a second acoustic tuning mechanism in communication with the second intake manifold. | 08-06-2009 |
