Hitachi Automotive Systems Americas, Inc.

Hitachi Astemo Americas, Inc.

Anthony P Boone

Prashanth Avireddi

Frank Warren Hunt

Zachariah Rabatah

Malcolm Mizuba

Steven J Miller

Naoki Oka

Yasuo Namaizawa

Shannon Jones

Jeff Rohrback

Su-Wei Sung

Nicholas Ryan Dal Pra

Minoru Hashida

In some examples, a system includes an airflow sensor disposed at least partially within an air intake system for an engine. The airflow sensor may be configured to measure a flow rate of air flowing past the airflow sensor in the air intake system, and includes a sensor element and a heater associated with the sensor element. A heater control circuit may control the heater to control a temperature of the sensor element. Further, a processor may be configured by executable instructions to cause the heater control circuit to, in a first operation mode, maintain the sensor element at a higher temperature range, and, in a second operation mode, maintain the sensor element at a lower temperature range that is above an ambient temperature and that is lower than the higher temperature range.

Reducing mass airflow sensor contamination

In some examples, a fuel injector rail assembly may include a fuel rail including a tubular body, with a fuel outlet passage formed through a wall of the tubular body. An injector cup may be connected to the tubular body and may include an injector chamber configured to receive a fuel injector. A first fuel passage formed in the injector cup may include a first diameter, and the first fuel passage may be connected to the fuel outlet passage of the tubular body. Additionally, a second fuel passage may be formed in the injector cup between the first fuel passage and the injector chamber. The second fuel passage may have a second diameter that is smaller than the first diameter of the first fuel passage.

Fuel injector cup with flow restriction passage

In some examples, a mass airflow sensor apparatus includes a housing having a tubular bore for passage of air, with an airflow sensor disposed at least partially within the tubular bore. The airflow sensor may be configured to measure a flow rate of air flowing past the airflow sensor. A focus component may be disposed upstream of the mass airflow sensor, the focus component including a cylindrical tubular focus member suspended within the bore. Further, a nozzle may be disposed upstream of the focus component. The nozzle may include a conical inner surface angled toward a center of the bore. In addition, a grid component may be disposed upstream of the focus component. The grid component may include a mesh grid including a plurality of openings for smoothing a flow of air flowing toward the airflow sensor.

Calibration-free mass airflow sensor

In some examples, a clip prevents relative rotation between a fuel injector and an injector cup of a fuel rail. For instance, the fuel injector may be rotated following insertion into the injector cup to prevent removal of the fuel injector. The clip includes a clip body having a pair of arms extending from the clip body with an opening between the arms for receiving the fuel injector. A tab extends from the clip body into the opening for engaging a first alignment slot in the injector cup and a second alignment slot in the fuel injector when the clip is installed on the fuel injector. Following installation of the clip on the fuel injector, the tab is disposed in the first and second alignment slots to prevent relative rotation between the fuel injector and the injector cup.

Fuel injector clip

Growing community of inventors

Westland, MI, United States of America

Anthony P Boone