Abstract: A synthetics rules creation processor or portal recognizes correlations between vehicle data and conditions, corporate knowledge and memory, company proprietary information, vehicle location, customer reported symptoms, and vehicle electronic control module fault codes. The synthetics rule creation processor or portal generates synthetic rules based on the correlations. A synthetic fault processor or synthetics engine compares current vehicle data and conditions, vehicle location, customer reported symptoms, and fault codes against the synthetic rules. The fault processor or synthetics engine generates synthetic fault codes based upon matching comparisons. The at least one synthetic fault code, along with an action plan, thereafter becomes part of a vehicle health report.

Abstract: A rotary engine has a circular shaped rotor and stator. The rotor has an expansion chamber for combustion and the stator has thrust director gate that passes through a passageway through the stator face to alternatively ride along the face of the rotor or to ride within the expansion chamber of the rotor. Passageways through the stator and radially close to the thrust director gate allow for air, fuel, and an ignition source to pass through the stator allow for ignition and expansion of the fuel within the expansion chamber. The thrust director allows for thrust to be applied to the rotor to rotate the rotor. An exhaust manifold, also passing through stator, and also radially aligned with the expansion chamber allows exhaust gases from combustion to be released from the expansion chamber as the rotor rotates the expansion chamber adjacent to the exhaust manifold.

Abstract: A control strategy for a vehicle powered by an internal combustion engine has a repeating cycle of accelerating the vehicle during a more fuel efficient acceleration phase of the cycle followed by a deceleration phase of the cycle which uses little or no fuel.

Abstract: An fresh air/exhaust gas compact mixer and method for mixing fresh air with exhaust gases, is provided. The mixer includes a main body, an air inlet for receiving fresh air fluidly connected to an air intake passage within the main body, an exhaust gas inlet for receiving exhaust fluidly connected to an exhaust gas passage within the main body. The mixer also includes a bifurcation within the air intake passage for directing the flow of air through the passage, wherein the bifurcation decreases a cross section of the air intake passage downstream from the air inlet, thereby increasing the air velocity exiting the air intake passage. The narrowed cross section creates a localized vacuum, encouraging an increased flow of exhaust gas through the mixer, and creating superior mixing of the fresh air with the exhaust gases prior to exiting the mixer.

Abstract: Methods are provided for estimating the NOx content of exhaust gas produced by an internal combustion engine. The method includes determining one or more operating parameters. The method further includes applying the determined operating parameter(s) to a global NOx model. The global NOx model may be derived using a plurality of steady state data points relating to local NOx emission models. The steady state data points may be derived using a plurality of set and variable operating parameters. The global NOx model allows for prediction of the engine-out NOx content of exhaust gas in real time and without a NOx sensor, even if engine operating parameters change.

Abstract: A method of setting actuator position of a variable geometry turbine linked to drive a compressor for a compression ignition engine using exhaust gas recirculation. The method includes detecting an engine transient event; determining current mass air flow through the compressor and exhaust temperature; resetting variable geometry turbine position to maximize mass air flow through the compressor; adding the maximum allowable quantity of fuel; determining exhaust temperature increase; adjusting exhaust pressure to allow an increase in mass air flow and exhaust temperature; and returning to the resetting step until a limit is reached.

Abstract: The present technology provides methods and systems for reducing ice buildup in a closed engine breather system. The systems comprise an air inlet duct, a compressor wheel and a compressor cover. The compressor cover comprises a breather gas port. The breather gas port is placed in the compressor cover at a location within close proximity to the leading edge of the compressor wheel so that the compressor wheel is capable of removing ice that accumulates at the breather gas port. The present technology also provides methods that include providing an air inlet duct, a compressor wheel, and a compressor cover with a breather gas port in the compressor cover. In this manner the compressor wheel can grind or shave off ice that accumulates at the breather gas port.

Abstract: An engine and after treatment system comprising an engine with an exhaust line engaged to upstream after treatment components, the upstream after treatment components engaged to a selective catalytic reduction converter, a means for bypassing the upstream after treatment components to allow engine exhausts to warm a catalyst within the selective catalytic reduction converter. One version allows indirect warming of the catalyst by providing a pathway for engine exhausts thru a warming cavity located on an outer region of the selective catalytic converter and then back thru the upstream after treatment components.

Abstract: A flow manifold system for injecting a first gas into a second gas, such as, for example, a system for injecting ammonia gas into the exhaust gas of an internal combustion engine. The first gas may be supplied to the system by one or more cartridges. The system may also include a control valve that is configured to control the delivery of the first gas to the least one critical flow orifice. The critical flow orifice is configured to allow for a relatively constant volumetric flow of the first gas through the critical flow orifice when the first gas attains a critical flow. Such critical flow may allow for an accurate estimation of the flow of the first gas through the critical orifice, and subsequently to the second gas, without the use of a flow sensor.

Abstract: A water pump apparatus is provided having a plurality of modular components, which allows for construction of various configurations of the water pump apparatus depending on specific vehicle requirements. The water pump apparatus modular components include a pump housing with a fluid chamber formed therein, a bearing housing for attachment to the pump housing, and a thermostat housing for connecting to the bearing housing and the pump housing. A method for forming modular components for assembling a water pump apparatus for use in an internal combustion engine is also provided.

Abstract: Reductant is metered into an engine exhaust gas after-treatment system upstream of an SCR catalyst at engine exhaust gas temperatures both less than and greater than a DEF dosing threshold temperature to render the catalyst effective in reducing NOx without creating undesired reaction products which would impair effectiveness of the after-treatment system at engine exhaust gas temperatures less than the DEF dosing threshold temperature.

Abstract: Reductant is metered into an engine exhaust gas after-treatment system upstream of an SCR catalyst at engine exhaust gas temperatures both less than and greater than a DEF dosing threshold temperature to render the catalyst effective in reducing NOx without creating undesired reaction products which would impair effectiveness of the after-treatment system at engine exhaust gas temperatures less than the DEF dosing threshold temperature.

Abstract: An inlet fluid booster system for an internal combustion engine having engine cylinders includes a compressed fluid supply source that is in upstream fluid communication with the engine cylinders. A fluid booster is in downstream fluid communication with the compressed fluid supply source for selectively introducing compressed auxiliary fluid from the compressed fluid supply source. The auxiliary fluid is selectively introduced from the fluid booster to have a velocity vector towards the engine cylinders that is greater than a velocity vector away from the engine cylinders.

Abstract: A method and apparatus for determining a characteristic of an injector are set forth. In one example, a compressed gas is applied to the inlet chamber of the injector while the spoolvalve is closed until the pressure of the compressed gas in the inlet chamber reaches a predetermined pressure. A change in pressure of the compressed gas in the inlet chamber is measured over time while the spool valve is closed. The pressure change measurement corresponds to the characteristic of the injector that is to be determined.

Abstract: A control system for an internal combustion engine comprises pressure sensing means, memory means, processing means, and fuel injection control means. Pressure sensing means generate in-cylinder pressure data used to calculate total heat generated during combustion cycle. Memory means store predetermined crank angle data, such as CA50 crank angle data, for variety of engine operating conditions. A CA50 crank angle is a crank angle position where fifty percent of total heat is generated. Memory means additionally stores allowable start of injection crank angle data. Processing means determine an observed CA50 crank angle. Processing means conducts comparison of at least one of the predetermined CA50 crank angle data against the observed CA50 crank angle to generate a start of fuel injection crank angle which impacts the observed CA50 crank angle during subsequent combustion cycle. Fuel injection control means controls start of fuel injection crank angle generated by the processing means.

Abstract: First intake valve and second intake valve for an engine cylinder bore within which a piston reciprocates are arranged side-by-side in a cylinder head for motion in unison along respective intake valve axes. First intake valve axis is nonparallel to the cylinder bore axis. A first intake valve seat for the first intake valve is disposed in a plane which is non-parallel to a plane which is perpendicular to the cylinder bore axis. First intake valve seat has a first semi-circumference toward a second semi-circumference of a second valve seat for second intake valve. At least a portion of first semi-circumference is closer, as measured along a direction parallel to the cylinder bore axis, to a plane passing through the piston perpendicular to the cylinder bore axis than is the second semi-circumference as measured along a direction parallel to the cylinder bore axis.

Abstract: An apparatus for setting a clearance has a movable body and a valve guide. A valve body is disposed along the axis of the movable body, and a bore hole is formed in the movable body. The bore hole is formed on the axis and includes a first bore with a first diameter, a receiving surface, and a second bore. A tool having a forward surface is inserted into the bore hole and pressed against the receiving surface. The flow of a fluid between the guide cylinder and the movable body is determined and compared against a standard. If it does not meet the criteria, the force is adjusted and reapplied until it meets the desired value.

Abstract: A fluid metering unit has a housing providing a flow path from an inlet port through a first solenoid valve and a second solenoid valve to an outlet port. An electric circuit board for operating the solenoid valves is contained within the housing. Also contained within the housing and connected to the electric circuit board are a temperature sensor and a pressure sensor for sensing temperature and pressure in the flow path. An electric-operated temperature control element in thermally conductive contact with the housing controls temperature along at least a portion of the flow path.

Abstract: A compression ignition engine (10) operates to fuel an engine cylinder (12) to create an in-cylinder air-fuel charge and to cause that charge to autoignite. A fuel injector (20) operates to inject fuel into the engine cylinder for substantially the entire duration of a first phase (24) of fuel injection at substantially the maximum injection pressure that the fuel injector can deliver to create a premixed fraction of the in-cylinder air-fuel charge prior to autoignition. As the first phase ends, fuel injection transitions to a second phase (26) which commences in advance of autoignition. During the second phase, the fuel injector injects fuel into the engine cylinder at a rate of injection that is significantly less than the rate of injection used during the first phase.

Abstract: Injector drift for a diesel engine are detected by reconfiguration of injection patterns from one pattern into a pattern with a different number of pulse points while attempting to hold total fuel injected constant. If a particular injector is subject to drift then changes in the pulse pattern result in an increase or decrease in fuel injected and consequential variations in engine speed. By applying alternating injection patterns at constant fuel demand and allowing engine speed time to stabilize, a rhythmic variation in engine speed/torque will appear which can be detected using one of a number of techniques.