US 4,230,045 A · Method and system for increasing the track-to-wheel friction of the wheels of a locomotive for motive power and decreasing the rolling resistance for trailing loads

Abstract

A method and system for maximizing the track-to-wheel adhesion and minimizing the rolling resistance of the wheels of a locomotive is disclosed. A low volume of high pressure water, alone or in admixture with wetting agents, cleaning agents, etc. is sprayed onto the wheel contact surface of the rail forward of the driven wheels of the locomotives at very high pressures, i.e. 4,000 to 6,000 psi. followed immediately by ejecting air or other gas under pressure onto the wheel contact surface of the rail to dry the contact surface. The combination of high pressure water and air provides effective cleaning of the contact surfaces of the rail, thereby (1) increasing the friction between the driven wheels and the track; (2) lessening the draft effort of the locomotive driving the wheels of the train; (3) minimizing the wearing of both rails and the wheel surfaces by eliminating the use of abrasive materials, such as sand; (4) improving track condition; (5) increasing train braking capability; (6) lessening contamination of rail bed ballast; and (7) lessening energy consumption for movement of the train.

Claims7

Dependent claims

A system for maximizing the track-to-wheel adhesion and minimizing the rolling resistance of the wheels of a locomotive, comprising:

a jet nozzle positioned directly above the contact surface of the track immediately forward of the driven wheels of the locomotive;
a high pressure pump connected to the nozzle assembly delivering water at a pressure of at least 4,000 psi to the jet nozzle,
water storage means holding a supply of water for delivery to the high pressure pump,
valve control means controlling the delivery of water to the jet nozzle, and
means for ejecting a high pressure gas onto the same contact surface of the rails forward of the driven wheels of the locomotive and immediately following the means for ejecting high pressure water for drying and conditioning the wheel contact surfaces of the rail to assure maximum adhesion of the locomotive wheels thereto and minimize the rolling resistance of the locomotive wheels thereon.

2 more elements

A system for maximizing the track-to-wheel adhesion and minimizing the rolling resistance of the wheels of a railroad locomotive riding along a track comprising:

a supply tank holding water,
a high pressure pump receiving water from the tank and discharging the water at a pressure of at least 4,000 psi,
power means operatively connected to the pump to drive the same,
water jet nozzles, one above each rail mounted forward of each of the driven wheels of the locomotive for receiving and ejecting the high pressure water discharged from the pump onto the respective wheel contact surfaces of the rails,
first valve means intermediate the pump and jet nozzles for controlling delivery of the high pressure water to the nozzles,
means providing a source of pressurized air,
air jet nozzles, one above each rail directly adjacent the water jet nozzles, the air jet nozzles connected to the source of pressurized air for delivery of air under pressure forward of the driven wheels of the locomotive immediately following the water jet nozzles to remove the water from the wheel contact surfaces of the rails ejected from the first pair of nozzles,
second valve means intermediate the air jet of nozzles and source of pressurized air controlling delivery of air to the air jet nozzles, and
means for metering an additive for conditioning of the wheel contact surfaces into the pressurized air stream just ahead of the air jet nozzles.

6 more elements

Dependencies are inferred from the claim text.

Method and system for increasing the track-to-wheel friction of the wheels of a locomotive for motive power and decreasing the rolling resistance for trailing loads

Life of this patent

Method and system for increasing the track-to-wheel friction of the wheels of a locomotive for motive power and decreasing the rolling resistance for trailing loads

Life of this patent

Abstract

Claims7