Piezoelectric diesel injectors

Nuovi arrivi ogni giorno per rinnovare il tuo guardaroba, approfittane ora. YOOX, Acquista Ora! Scopri la Selezione Esclusiva! This technology acts up to five times faster than a standard injector and operates in a frictionless motion, thereby resulting in precise fuel measurements and allowing for multiple injections per combustion cycle.

Piezo injectors use piezoelectric technology to open and close fuel injectors at extremely high speeds and precision to inject fuel into an internal combustion engine. These injectors are used in both petrol and diesel engines to improve their persformance and efficiency.

Because they act so quickly, piezo injectors also can inject several times (as many as seven in some diesels) during a single combustion cycle. This flexibility can reduce emissions in all engines.

Piezo fuel injectors (CRI4), which use piezo crystals as part of a rapid actuator, are helping manufacturers to meet their Euro target. Traditional diesel injectors use electromagnetic, or solenoi controls.

The electronic engine management system sends an electrical signal to activate the mechanical valve that controls fuel flow. About 27% of these are testing equipment, 5% are other auto engine parts, and 1% are machinery engine parts. In common rail diesel engines the traditional injection system is based on complicate hydraulic equilibriums: the actuation force is given by the common rail pressure itself, which drives the drawer valve.

A direct acting piezoelectric fuel injector prototype for the common-rail system was developed to preserve the lifetime of the actuator, achieve an adequate needle lift, and response quickly.

Testing is accomplished using a Zapp DIESEL TECH CRU. Piezoelectric Injectors Modeling and Control.

The injected fuel quantity is proportional to the injector duration (opening time), fuel rail pressure, fuel temperature and fluid viscosity. Hino K13C, cylinder, 12. You can now buy Bosch Genuine OE Diesel Injectors from the world’s leading supplier of diesel fuel injection systems. Get Info From Multiple Sources.

For DI diesel engines, higher injection pressure usually leads to better spray mixing processes, and is considered to be one of the most effective approaches to meet the performance demand, and to generate more uniform atomization in cylinder. It enables better fuel economy and emission control. This paper provides with an overview, design and constructional features, working and applications of piezoelectric diesel Injectors.

The solenoid and piezoelectric injectors have been installed on a Euro diesel engine, which has been tested experimentally at a dynamometer cell. Optimized double and triple injection strategies have been considered at some representative key points of the New European Driving Cycle. CN), under di erent working conditions in a low-compression-ratio diesel engine for passenger cars.

About 1% of these are other auto engine parts. Experimental measurements of the rate of injection were carried out for a diesel piezoelectric direct-acting injector, to study the influence of the operating temperature in its performance. A new injector holder was manufacture with a cooling sleeve connected to a thermoregulator that drives a circuit containing ethylene glycol.

Bosch Company declined piezoelectric fuel injectors and reverted to. To this en the diesel direct injection system has recently seen the introduction of direct-acting piezoelectric injectors, which provide engineers with direct control over the needle lift, and.

The most common diesel application currently for piezo style injectors are Ford 6. Most large over the road tractors use a much simpler yet still pricey injector. In conventional injection systems this part mainly served the nozzle mounting and nozzle needle spring preloading function.

In common rail systems, it contains the main functional parts: the servo-hydraulic circuit and the hydraulic actuator (electromagnetic or piezoelectric ). Injector commonly refers to the nozzle holder and nozzle assembly. This effect says that if a current is applied to a crystal then said device should change shape and therefore control a valve device, such as the fuel valve or injector.

The invention relates to a driving current control circuit of a piezoelectric ceramic diesel injector. The driving current control circuit of the piezoelectric ceramic diesel injector comprises a first processor and a piezoelectric ceramic executor, wherein the high-voltage end of the piezoelectric ceramic executor is connected with the source electrode end of a high-voltage charging switch. as PDF File (.pdf), Text File (.txt) or read online for free.

About 43% of these are testing equipment, 4% are diagnostic tools. A wide variety of piezoelectric injector test options are available to you, such as electronic, hydraulic.