A Monolithic Integrated Solution for MAP Applications

Verma, Rajan; Baskett, I.; Shah, M.; Maudie, Theresa; Mladenovic, Dragan; Sooriakumar, K.

doi:10.4271/970608

Cited by 7 publications

(8 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is assumed that manifold pressure, P (kPa), engine speed, N (rpm), and exhaust air}fuel ratio, r , are measured and that the mass air-#ow through the electronic throttle is not measured. Manifold pressure sensors have very high bandwidth [19,20] and thus any sensor dynamics can be ignored. # A delay equal to one-third engine revolution, d/3, will be included to represent a reasonable sample rate.…”

Section: Measurementsmentioning

confidence: 99%

“…Switching from (20) to (22) provides a faster response than using a feedforward plus feedback con"guration. The method used for switching is explained in Section 6.…”

Section: ##mentioning

confidence: 99%

“…If one did not wish to rely on measured r , control could be done on the basis of estimated in-cylinder air}fuel ratio instead of measured exhaust air}fuel ratio. Due to the long time delay in the air}fuel ratio loop, the controller (20) will respond slowly to a change in commanded set-point. During a commanded purge however, fuel economy is enhanced by making the transition to a rich air}fuel ratio as quickly as possible.…”

Section: ##mentioning

confidence: 99%

“…During a commanded purge however, fuel economy is enhanced by making the transition to a rich air}fuel ratio as quickly as possible. For this reason, during a commanded transition from lean to rich operation, (20) is replaced with ## = (t)" Figure 10 shows the response of the closed-loop system to a step in engine load torque*** from 10 to 20 Nm at time 15 s. It is seen that without any feedforward information on the load step, the RRRNote that at 750 rpm, the combined combustion and measurement delay is approximately 0.11 s, and thus with an engine inertia of 0.141 (Nm s), a 10 Nm load increase and will result in a speed drop of approximately 73 rpm before the engine torque can possibly respond.…”

Section: ##mentioning

confidence: 99%

“…Several more issues must be addressed before the compensators (12), (20), (25) and (26) can be integrated into a functional speed controller. Each issue is a direct or indirect consequence of saturation.…”

Section: Additional Nonlinearities and Logic To Deal With Saturationmentioning

confidence: 99%

See 4 more Smart Citations

Idle speed control of a direct injection spark ignition stratified charge engine

Grizzle

Buckland

Sun

2001

Intl J Robust & Nonlinear

View full text Add to dashboard Cite

SUMMARYIdle speed control is investigated for a direct injection, spark ignition, strati"ed charge (DISC) engine equipped with an electronic throttle. Such engines can be operated in multiple combustion modes. When operating in strati"ed charge combustion mode, they are very di!erent from conventional stoichiometric engines, creating new opportunities for improved speed control. With current after-treatment technology, simultaneous high fuel economy and emissions conversion e$ciency cannot be achieved by operating the engine in a steady-state manner: it must be cycled between running ultra-lean (for fuel economy) and rich (to service the after-treatment system). An idle speed control system is designed to meet the considerable feedback control demands required by these new engines.

show abstract

Section: Measurementsmentioning

confidence: 99%

“…Switching from (20) to (22) provides a faster response than using a feedforward plus feedback con"guration. The method used for switching is explained in Section 6.…”

Section: ##mentioning

confidence: 99%

Section: ##mentioning

confidence: 99%

Section: ##mentioning

confidence: 99%

Section: Additional Nonlinearities and Logic To Deal With Saturationmentioning

confidence: 99%

See 3 more Smart Citations

Idle speed control of a direct injection spark ignition stratified charge engine

Grizzle

Buckland

Sun

2001

Intl J Robust & Nonlinear

View full text Add to dashboard Cite

show abstract

CMOS‐based Pressure Sensors

Timme

2005

Advanced Micro and Nanosystems

View full text Add to dashboard Cite

High-sensitivity MEMS pressure sensor utilizing bipolar junction transistor with temperature compensation

Basov

2020

Sensors and Actuators A: Physical

View full text Add to dashboard Cite

The paper presents MEMS pressure sensor chip utilizing novel electrical circuit with bipolar-junction transistor-based (BJT) differential amplifier with negative feedback loop (PDA-NFL). Pressure sensor chips with two circuits have been manufactured and tested: the first chip uses circuit with vertical n-p-n (V-NPN) BJTs and the secondcircuit with horizontal p-n-p (L-PNP) BJTs. The demonstrated approach allows for increase of pressure sensitivity while keeping the same chip size. It also can be used for chip size reduction and increase of pressure overload capability while maintaining the same pressure sensitivity. Significant reduction of both noise and temperature instability of output signal has been demonstrated using transistor amplifier with negative feedback loop. This is a green open access article under the CC BY license.

show abstract

A Monolithic Integrated Solution for MAP Applications

Cited by 7 publications

References 7 publications

Idle speed control of a direct injection spark ignition stratified charge engine

Idle speed control of a direct injection spark ignition stratified charge engine

CMOS‐based Pressure Sensors

High-sensitivity MEMS pressure sensor utilizing bipolar junction transistor with temperature compensation

Contact Info

Product

Resources

About