Deere & Company

Best Green Answers, LLC

Todd Whiting

Carl Thomas Vuk

Kenneth A Budke, Ii

James Alan Eng, Jr

Kenneth A Budke Ii

A lubricant composition includes a mixture of grease and wax formed into a block which is solid at atmospheric pressure and temperatures up to 150&#xb0; F., and which transforms into a semi-solid under mechanical loading. The mixture is formed with 5-25% of melted wax. The block may be coated to form a shell to remain solid at elevated temperatures. The block may include other additives. The grease block is suitable for use in various applications, including on a 5wheel trailer hitch plate.

Lubricant transformable from solid to semi-solid

An engine system incorporating an air breathing, reciprocating internal combustion engine having an inlet for air and an exhaust for products of combustion. A centripetal turbine receives products of the combustion and has a housing in which a turbine wheel is rotatable. The housing has first and second passages leading from the inlet to discrete, approximately 180&#xb0;, portions of the circumference of the turbine wheel. The passages have fixed vanes adjacent the periphery of the turbine wheel and the angle of the vanes in one of the passages is different than those in the other so as to accommodate different power levels providing optimum approach angles between the gases passing the vanes and the blades of the turbine wheel. Flow through the passages is controlled by a flapper valve to direct it to one or the other or both passages depending upon the load factor for the engine.

Internal combustion engine system having a power turbine with a broad efficiency range

An internal combustion engine includes at least one cylinder block having at least one combustion cylinder. A number of cylinder liners are respectively associated with each combustion cylinder. Each cylinder liner defines a corresponding cylinder inside surface. Each cylinder liner includes a plurality of discrete oil retaining indentations in a predefined pattern on the cylinder inside surface. The plurality of oil retaining indentations are bounded in both peripheral and longitudinal directions of the corresponding cylinder liner.

Internal combustion engine with localized lubrication control of combustion cylinders

An exhaust pressure restriction device with bypass passageway is provided. The device comprises a turbocharger having a turbine portion, a restrictor fitting and a bypass fitting. The turbine includes an exhaust gas inlet, a turbine wheel, an exhaust gas outlet and a waste gate valve. The restrictor fitting comprises an exhaust gas inlet, an exhaust gas outlet and an orifice disposed between the exhaust gas inlet and the exhaust gas outlet. The restrictor fitting is mated to the turbine such that the exhaust inlet of the restrictor fitting communicates with the exhaust outlet of the turbine. The bypass fitting has an exhaust gas inlet, an exhaust gas outlet, and a bypass passageway. The exhaust gas outlet of the bypass fitting is adapted to communicate with the exhaust system of the vehicle and to be matingly fitted to both the restrictor fitting and the turbine. The exhaust gas inlet of the bypass fitting communicates with the exhaust gas outlet of the restrictor fitting, while the bypass passageway communicates with the waste gate of the turbine. The exhaust inlet of the turbine is connected to the exhaust manifold of an internal combustion engine. In operation during the peak torque condition of the engine the waste gate valve is closed so that all exhaust gases engage the turbine wheel, the gas then exits the turbine at the exhaust outlet through the orifice of the restrictor fitting and out the exhaust outlet of the bypass fitting. Because the waste gate is closed no gas is allowed to bypass the restrictor orifice. The size of the orifice is selected to create enough back pressure at the peak torque condition to attain the desired level of negative delta P necessary to drive EGR. As the speed of the engine increases the waste gate valve opens allowing a portion of the exhaust gases to bypass the turbine wheel. This gas is then also routed around the restrictor orifice via the bypass passageway thereby lowering the back pressure because the waste gated gases are not subject to the flow restriction caused by the restrictor fitting. Thus negative delta P at rated speed is reduced so as to improve fuel economy at this critical operating point while still maintaining a level adequate to drive EGR.

Exhaust pressure restriction device with bypass passageway

Exhaust gas recirculation is provided in a turbocharged diesel engine by adding a separate EGR manifold and a secondary exhaust valve for each combustion chamber that permits passage of exhaust gas from the combustion chamber to the EGR manifold. The secondary exhaust valve is opened during the expansion stroke of the engine cycle and sometime after the combustion process has been completed while the pressure in the combustion chamber is still greater than the pressure in the intake manifold. One or two EGR valves can be opened to admit the high pressure exhaust gas from the EGR manifold into the intake manifold. Decompression braking can be provided by an additional valve between the EGR manifold and the exhaust manifold that is opened to dump the gas from the EGR manifold to the exhaust manifold while the secondary exhaust valve in the cylinder head is opened at the beginning of the expansion stroke of the piston whereby the compressed air in the cylinder escapes before performing work on the piston.

Growing community of inventors

Waterloo, IA, United States of America

Todd Whiting