Injector and Method for Injecting Fuel and an Additional Fluid, and Use of the Injector

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This invention describes an injector for internal combustion engines that can inject both fuel and an additional fluid (such as water) with high precision. The design features two solenoid valves arranged in-line, with independently controllable nozzle needles, allowing separate and accurate dosing of each fluid directly into the combustion chamber. This setup enables enhanced control over combustion, especially by introducing an insulating vapor layer via pre-injected water.

Use CasesContent extracted from patent full text and abstract with AI.

• Automotive engines (both diesel and gasoline) for cars, trucks, and off-road vehicles
• High-performance engines to reduce thermal load during full load conditions
• Stationary power generation engines to optimize fuel efficiency and emissions
• Marine internal combustion engines
• Industrial engines with variable emission regulations
• Retrofit/upgrades for emission reduction compliance

BenefitsContent extracted from patent full text and abstract with AI.

• Precise, independent control over fuel and additional fluid injection
• Space-saving, simple injector design reduces complexity and manufacturing cost
• Potential to decrease engine temperatures by injecting water, reducing component wear and improving durability
• Improved combustion efficiency and reduced fuel consumption
• Significant reduction in emissions (especially NOx) by controlling in-cylinder temperature
• Reduction in heat losses to cylinder walls due to formation of insulating vapor layers
• Flexible adaptation to different engine operating conditions, supporting both performance and environmental goals

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The problem addressed by the the invention, which relates to an injector (1), to a method for injecting fuel and an additional fluid, and to a use of the injector (1), is that of providing an injector (1) that has a space-saving simple construction, and by means of which a precise injection of a fuel and an additional fluid into the combustion chamber of an internal combustion engine can take place. This problem is solved by the arrangement in that a second solenoid valve (3) having a second nozzle needle (9) is arranged in the injector (1), and in that the first nozzle needle (7) of the first solenoid valve (2) and the second nozzle needle (9) of the second solenoid valve (3) are arranged one behind the other on a longitudinal axis (10) of the injector (1). The problem is solved by the method in that a second solenoid valve (3) having a second nozzle needle (9) is provided in the injector (1), in that the first nozzle needle (7) of the first solenoid valve (2) and the second nozzle needle (9) of the second solenoid valve (3) are provided one behind the other on a longitudinal axis (10) of the injector (1), and in that the nozzle needles (7, 9) can be controlled independently of one another.